00000-1930  LTT 9831- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
00014+3937  HLD  60 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
00022+2705  BU  733 - 85 Peg. Poor HIP sol.                                                 Sod1999 
                    - A third star has been detected by infrared speckle interferometry.    Mcy1983 
                    - AO photometric analysis includes mass determination.                  TtB2000 
00053-0542  33 Psc  - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Harper (1926).                                                        Hrp1926 
00057+4549  STT 547 - Both stars have variable RV (ranges 45 and 25 km/s, respectively).            
                      Another star (9.9, 330") has cpm.                                             
                    - AB: Bolometric corrections and component masses determined from               
                      M-L relation. A family of possible orbits were determined for                 
                      the F component relative to AB pair (Note: only the shortest-period           
                      solution is presented here.)                                          Kiy2001 
00063+5826  STF3062 - One component is variable, P = 1.08 d, probably due to partial                
                      eclipses. It is designated V640 Cas.                                          
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
00084+2905  MKT  11 - Alpha And. Spectroscopic and photometric data are combined with               
                      astrometry from the Mark III interferometer to derive orbital                 
                      elements for the SB1.                                                 MkT1992a
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Pan et al. (1992).                                                    MkT1992a
00090-5400  HDO 181 - Quoted errors in P and a are +116/-40y, +0".20/-0".06, respectively.  Ary2002b
00114+5850  SKW   1 - Aa,Ab. Primary of the Herbig Ae/Be pair LkHa 198. A family of         SKW2005 
                      possible orbits are calculated, based on various choices for                  
                      initial parameters (luminosities, component masses, etc.)                     
00125+1434  LN Peg  - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
00134+2659  STT   2 - Star C (mag. 10.37, 18") is physical.                                         
                    - Hipparcos parallax of 0".00808 yields a mass sum of 1.9 Msun,                 
                      slightly underestimated for a double star of spectral type F8V.               
                      Dynamic parallax is 0".0053, considerably different from the                  
                      measured one.                                                         Sca2000b
00155-1608  HEI 299 - L722-22. Too poor astrometric orbit (Innes 1998) and too few          Inn1988 
                      resolved observations (cf. Heintz 1990) to give definite orbit.       Hei1990a
                      Present solution at least preferable to `X' HIP solution.                     
00167+3629  STT   4 - Hipparcos parallax of 0".01115 yields a mass sum of 2.75 Msun                 
                      with an uncertainty of 38% overestimated for a double star of                 
                      spectral type G0. Dynamic parallax is 0".0108, agreeing well with             
                      the measured parallax.                                                Sca2000b
00169-5239  GC 333  - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Bopp et al. (1970).                                                   Bop1970 
00174+0853  A  1803 - Too close 1932, 1946-47, 1965-72. Modern measures show a close                
                      approach about 1985. Two orbit solutions (Ling 1984). Baize (1987)    Lin1984b
                      orbit appears preferable to long-period Ling orbit, however.          Baz1987 
00184+4401  GRB  34 - RV of star A possibly variable. Star B is a BY Dra-type variable,             
                      CQ And. C is optical.                                                         
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
00206+1219  BU 1015 - Hipparcos parallax of 0".00883 yields a mass sum of 2.87 Msun                 
                      with an uncertainty of 75% slightly in excess for a binary of                 
                      spectral type F5. The great uncertainty concerning the sum of                 
                      masses is largely due to the consistent error in the measured                 
                      parallax. The dynamical parallax is 0".0085, agreeing well with               
                      the observed parallax.                                                Sca2000b
00210+6740  HJ 1018 - Uncertain `visual' edge-on orbit.                                             
00214+6700  STT   6 - Star C (mag. 10.16, 13.5") is physical.                                       
                    - Orbit is very eccentric and very inclined. Geometrical elements do            
                      not differ much from those of Van Biesbroeck and Muller, but orbit            
                      is more eccentric and a double period. Hipparcos parallax of                  
                      0".00491 yields a mass sum of 6.6 Msun, overestimated for a binary            
                      system of spectral type B8.5V. The dynamical parallax is 0".0054,             
                      in reasonable agreement with the measured one.                        Sca2000b
00243+5201  HU  506 - Single 1934, 1953. A is SB, P = 28d:.                                         
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
00247-2653  LEI   1 - Paper includes estimate of the mass sum, etc.                         Lei2001 
00262-4217  alp Phe - Astrometric solution using P, T, e adopted from the spectroscopic     Ald1938a
                      orbit (Ann. Cape Obs. 10, pt. 8, 1924).                                       
00284-2020  B  1909 - Difficult visual system, with two components remaining within 0".2            
                      of each other throughout the orbit.                                           
                    - Two orbit solutions (van den Bos 1956, Soedehjelm 1999). High-        B__1956b
                      eccentricity, half-period solution fits equally well but gives        Sod1999 
                      too high mass-sum (with no third component allowed by q).                     
00315-6257  I   260 - Two Eggen (1965) orbit solutions - only #1 now in catalog.            Egg1965 
                    - Beta 1,2,3 Tuc form a sextuple system with cpm. Beta 2 Tuc = I 260.           
                      Beta 1 (mag. 4.36, 27" from Beta 2, B8V) has a faint companion                
                      (mag.14, 2"). Beta 3 (mag. 5.14, A2) is the close binary B 8.                 
00321-0511  A   111 - Star C (mag. 12, 2") is physical.                                             
00321+6715  VYS   2 + MCY   1                                                                       
                    - The primary is an astrometric, proper motion (+1.723, -0.242).                
                      Also a flare star, V547 Cas.                                                  
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Solution includes mass determination.                                 Woi2003 
00324+0657  MCA   1 - 51 Psc. Aa-B triple solution (double (Aa)-B in HIP). Orbit mostly     Hry1973 
                      dependent on Hershey (1973) pc obs; more IR speckle needed.           Msn1997a
00352-0336  HO  212 - 13 Cet. Visual primary is 2.1d SB1 (#27 in Batten et al., 1989 PDAO,          
                      17, 1B) and may be a Delta Scuti-type variable.                               
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
00360+2959  STF  42 - Hyperbolic orbit.                                                     Hop1967 
                      sigma = areal constant in the true orbit = 0.1432 arcsec^2/yr                 
                      q = periastron distance in the true orbit = 6".123                            
                    - Hopmann made small but unspecified corrections to the node and                
                      inclination before computing residuals and ephemeris.                 Fin1970b
                    - All hyperbolic orbits rejected from Fourth Catalog                    Wor1983 
00369+3343  MKT   1 - Pi And.                                                                       
                    - Visual orbit based on astrometry from Mark III interferometer.        MkT1995 
                      Additional spectroscopic data yield component masses, luminosities,           
                      radii, effective temperatures, and distance.                                  
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Hummel et al. (1995).                                                 MkT1995 
00373-2446  BU  395 - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
00393+3052  del And - photocentric (astrometric) orbit based on combination of ground-      Gon2002 
                      based catalogs with Hipparcos.                                                
00427-6537  I   440 - Derived orbital parallax 0".00685, mass sum 4.91 +/- 2.94 Msun        Lin2004a
00447+4817  omi Cas - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Abt & Levy (1978).                                                    AbH1978 
00487+1841  BU  495 - Hipparcos parallax of 0".01628 yields a mass sum of 2.14 Msun                 
                      with an uncertainty of 28%, agreeing well for a double star of                
                      spectral type G0. The dynamical parallax is 0".0149, in reasonable            
                      agreement with the measured one. Semi-major axis erroneously given            
                      as 0.317; a = 0.617 matches Scardia's figure, so is assumed to be             
                      the intended value.                                                   Sca2000b
00490+1656   64 Psc - 64 Psc. P=13.824621 days, T=JD 2450905.984. Combined spectroscopic/           
                      interferometric solution                                              Bod1999b
00491+5749  STF  60 - Eta Cas. Proper motion of A (+1141, -572). A has been reported to be          
                      an SB, but this is not confirmed.                                             
                    - System has been discussed by van de Kamp & Flather.                   Kam1955 
00492+5720  A   921 - Star C (mag. 14, 4.5") is probably physical.                                  
00504+5038  BU  232 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
00507+6415  MCA   2 - SB and resolved interferometric pair.                                         
                    - Composite spectrum: B9.5V+G0III-IV.                                           
                    - Combined spectropscopic/visual solution                               Msn1997b
00516+2237  A  1808 - Omega for Docobo (1988) solution corrected from 322.8 to 332.8        Doc1988b
                      degrees.                                                              Ruy1995 
00521-1314  HU  201 - Two orbit solutions - only #1 now in catalog                          Egg1965 
00550+2338  STF  73 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
00568+6022  BU 1099 + HR  266                                                                       
                    - The primary is 4.24d SB2 (Young, Pub DAO Victoria 1, 287, 1921;               
                      F.C. Fekel, personal comm.).                                                  
                    - Astrometric binary (P=4.85yr) discovered in residuals to speckle      CWA1992 
                      data for 83-year AB pair, as well as residuals to SB orbit.                   
00572+2325  MKT   2 - Eta And. Orbital elements derived from Mark III interferometer                
                      astrometry. Combined with spectroscopy by Gordon (1946 ApJ, 103, 13)          
                      to yield masses and distance.                                         MkT1993b
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
00594+0047  STF  80 - Two orbits calculated from perturbations seen to rectilinear motion.  Dom1969 
00596-0111  A  1903 - Star C (mag. 13.7, 6") is physical.                                           
01028+3148  sig Psc - Combined spectroscopic/interferometric solution (Palomar Testbed      Knc2004 
                      Interferometer), yielding distance = 112.9 +/- 0.9 pc, masses 2.65            
                      +/- 0.27 and 2.36 +/- 0.24 Msun, spectral types B9.5V, diameters              
                      0.16 and 0.15 mas.                                                            
01030+4723  STT  21 - A component may be SB.                                                        
01061-4643  SLR   1 - Quoted errors in P and a are +119/-35y, +0".51/-0".14, respectively.  Ary2002b
01078-4129  RST3352 - Upsilon Phe. Variable RV suspected. The lines are poor and show a             
                      scatter of 40 km/s without apparent relation to the visual motion.            
01083+5455  WCK   1 - Mu Cas. Astrometric orbit. The spectroscopic elements are somewhat            
                      different from those of Lippincott: P = 23.0, T = 1954.0, e = 0.30,   Lip1981 
                      omega = 178.0 (Worek & Beardsley, ApJ 217, 134, 1977).                        
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - The pair has now been resolved by infrared speckle interferometry.    Mcy1983 
                      McCarthy et al., Pierce & Lavery, Karovska et al. and Haywood et al.  Pie1985 
                      all compare their observations with published orbits and discuss      Kar1986b
                      luminosities and masses of components, helium abundances, etc.        Hay1992 
                    - Hipparcos astrometric solution adopts some elements from the orbit    HIP1997d
                      of Heintz & Cantor (1994).                                            Hei1994b
01084-5515  RST1205 - Derived orbital parallax 0".01176, mass sum 7.41 +/- 5.85 Msun        Lin2004a
01095+4715  STT 515 - Orbit preliminary.  Real period is probably long (>400 yr).  The      Sca2001d
                      Hipparcos parallax is 0".00443 +/- 0.00080, giving a mass sum of 6.9          
                      Msun, slightly in excess for a binary of spectral type B7Ve.                  
                      Dynamical parallax is 0".0033, in reasonable agreement with the               
                      measured one but not acceptable as it leads to an exaggerated mass            
                      sum (16.8 Msun).			                                                           
01131+1141  HD  7275- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
01141+1698  87 Psc  - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Stickland & Weatherby (1984).                                         Stc1984 
01148+6056  BU 1100 - The quadrant interpretation by Zulevic is less likely.                Zul1972a
                    - Muller corrected an error in his elements (Ephem. Cat. 1964).         Mlr1955b
                    - One component is a SB, P = 5.33d.                                             
                    - Only elements P, T, and a have been amended from the orbit of         Sta1977a
                      Zulevic (1972).                                                       Zul1972a
01158-6853  HJ 3423 + I    27                                                                       
                    - HJ 3423 and I 27, separated by 320", form the quadruple system                
                      Kappa Tuc. The position of I 27 is 011501.0-684908 (2000).            Sca1981a
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
01196-0520  A   313 - Only elements P and T have been amended from the orbit of             Sta1977a
                      Heintz (1968).                                                        Hei1968a
01198-0031  FIN 337 - 42 Cet. Star A (mag. 6.3, G8III) is in slow direct motion at                  
                      1.6" separation.                                                              
                    - T incorrectly given as 1992.52; should be 1993.02                     Baz1990a
                      (erratum noted in Inf. Circ. 111, 1990)                                       
01213+1132  BU    4 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - The Hipparcos parallax (0".00616 +/- 0.00141) yields a mass sum of    Sca2001d
                      4.7 Msun, in excess for a binary of type F1III.			                            
01234+5809  STF 115 - First measured by F.W. Struve in 1836 at an angular separation of     Hrt1989 
                      0".68, this system had opened to 1".2 by 1910, then steadily closed           
                      to 0".35 at the time of the first speckle measurement in 1978.                
                      The pair reached an apparent minimum separation of 0".01 in the               
                      spring of 1984.                                                               
01243-0655  BU 1163 - A combined visual-spectroscopic orbit by Morbey (1976) gives almost   Mrb1976 
                      the same elements, but in the representation of position angles       Sod1999 
                      Soderhjelm's elements are preferable.                                         
                    - Only elements P, T, and a have been amended from the orbit of         Sta1978c
                      van den Bos (1961).                                                   B__1961f
01251+4537  A   939 - Recent observations seem to rule out Muller's short-period            Mlr1955a
                      alternative.                                                                  
01277+0521  BU 1164 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
01284-4319  gam Phe - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Luyten (1936).                                                        Luy1936 
01297+2250  A  1910 - Star C (mag. about 12, 19") seems to be optical.                              
01312+7016  38 Cas  - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Wright & Pugh (1954).                                                 Wri1954 
01329-3652  GC 1881 - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
01337-1213  HWE   4 - The linear formula by Job & Tamburini seems ruled out, as it makes    Job1969b
                      the current quadrant opposite to what is observed.                            
01343-0827  A   314 - Derived orbital parallax 0".00978, mass sum 4.14 +/- 2.34 Msun        Lin2004a
01350-2955  BU 1000 + DAW  31                                                                       
                    - AB-C triple+var solution (AB in HIP).                                 Sod1999 
                    - B is 0.47d eclipsing binary (= BB Scl).                                       
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
01361-2954  HJ 3447 - Aredn orbit rejected from Fourth Catalog                              Ard1968 
                      ("orbit completely faulty and irreparable")                           Wor1983 
01376-0924  KUI   7 - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Combined spectroscopic/visual orbit, also yielding orbital parallax           
                      and component masses and absolute magnitudes.                         Tok1993 
01388-1758  LDS 838 - Also known as L 726-8. Both components are active flare stars.                
                      Star B is UV Ceti.                                                            
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
01409+4952  HU  531 - Star C (mag. 12.7, 18") may be physical.                                      
01418+4237  MCY   2 - An astrometric binary now resolved by infrared speckle                Lip1983 
                      interferometry. Improved pc (Delta m > 6) orbit combining pg          Hen1992 
                      (Lippincott 1983) and Hipparcos obs. Scaling by the speckle                   
                      IR (Henry 1992) gives orbit size and mass ratio.                              
01424-0645  A     1 - Omega corrected from 24.0 to 58.9, omega from 58.9 to 24.0            Ruy1995 
01425+2016  107 Psc - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
01498-3824  GC 2219 - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
01536+0311  xi Psc  - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin & Herbig (1981).                                              Grf1981b
01544-4230  phi Phe - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
01546+2049  MKT   3 - Beta Ari. Astrometry from Mark III interferometer combined with               
                      spectroscopy (Tomkin & Tran, 1987  AJ, 94, 1664) to determine                 
                      orbital elements, masses, and distance. Masses agree well with                
                      empirical mass-luminosity relation.                                   MkT1990 
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Pan et al. (1990).                                                    MkT1990 
01551+2847  STF 183 - Star C (mag. 8.7, 5.6") is physical.                                          
                    - Orbital elements are well defined; only the period is still rather    Sca2001d
                      uncertain. The Hipparcos parallax (0".00727 +/- 0.00189) gives a              
                      mass sum of 3.8 Msun +/- 82%, in excess for a binary of type F2.              
                      Dynamical parallax (0".0074) agrees well with the observed one.               
01559+0151  STF 186 - SB? Spectrum composite: F7V+G0V.                                              
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
01588-6134  alf Hyi - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
02009-4350  I   265 - Our finding of 1979.0 as the time of periastron supports the                  
                      prediction ("a close approach in the 1970's") made in the WDS.        Sey2002 
02020+7054  BU  513 - 48 Cas. Suspected sub-periods of 39 yr (Baize 1941) and 26 yr         Baz1941b
                      (Muller 1949) are not confirmed by later measures.                    Mlr1949c
                      not confirmed by later measures. The radial velocities of the         Hei1981e
                      primary may show a trace of a period of about 4 yr (Heintz 1981).             
                    - Star C (mag. 13.6, 24") is physical.                                          
                    - See Baize & Petit catalog of doubles with variable component.         Baz1989d
                    - Masses and bolometric magnitudes are derived for the two components           
                      based on assumed spectral types and available parallaxes.                     
02020+0246  STF 202 - Alpha Psc. Both components are listed as Alpha CVn variables of               
                      small amplitude, and both may have variable RV.                       Sca1983f
                    - See Baize & Petit catalog of doubles with variable component.         Baz1989d
02020+3643  A  1813 - The long-period alternative for AB (Heintz's orbit 2) seems to be     Hei1973a
                      eliminated.                                                                   
                    - Star C (mag 11.5, 0".8) is physical.                                  Fin1970b
02039+4220  STT  38 - Gamma And. A quadruple system. Star A (mag. 2.3, K3II) forms with BC          
                      the pair STF 205, separation 10". Star B is SB, P = 2.67 d                    
                      (Maestre & Wright, ApJ 131, 119, 1960). See discussion by Morgan      BLM1978 
                      et al. (1978).                                                                
02051+7717  47 Cas  - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
02095+3459  MKT   4 - Beta Tri.                                                                     
                    - Visual orbit based on astrometry from Mark III interferometer.        MkT1995 
                      Additional spectroscopic data yield component masses, luminosities,           
                      radii, effective temperatures, and distance.                                  
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Hummel et al. (1995).                                                 MkT1995 
02124+3018   TZ Tri - PTI solution with period fixed at spectroscopic value of Kaye et al.          
                      (1995 AJ 109, 2177).                                                  Krs1998 
02130+0851  MCA   5 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin & Herbig (1981).                                              Grf1981b
02136+5104  BAG   1 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Christie (1936).                                                      CWH1936 
02140+4729  STF 228 - AO photometric analysis includes mass determination.                  TtB2000 
02145+6631  MCA   6 - 55 Cas. Composite spectrum star: B9V + G0II-III, delta m = 0.2 mag    Bnu1984 
                      (Markowitz, 1969 Dissertation, Ohio State Univ.)                              
02155+5231  GC 2695 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin & Radford (1977).                                             Grf1977 
02157+2503  COU  79 - Computed masses disagree with spectral type. Authors suggest                  
                      third component (mass ~1 Msun) as possible explanation.               Cou1982d
02158-1814  HTG   1 - Orbit poorly covered, period rather indeterminate.                    Hei1978c
02171+3413  MKT   5 - Delta Tri.                                                                    
                    - Visual orbit based on astrometry from Mark III interferometer.        MkT1995 
                      Additional spectroscopic data yield component masses, luminosities,           
                      radii, effective temperatures, and distance.                                  
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Hummel et al. (1995).                                                 MkT1995 
02180+0145  GC 2770 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Harper (1935).                                                        Hrp1935 
02182+3920  A   207 - Orbit preliminary as all the orbital elements are still rather        Sca2001d
                      uncertain. The Hipparcos parallax (0".01200 +/- 0.00311) seems to be          
                      overestimated and leads to a mass sum 0f 0.46 Msun, unacceptable for          
                      a system of type F5. Scardia (1982 A&AS 47, 167) classified the star          
                      as type F9. Dynamical parallax is 0".0065; the corresponding  mass            
                      sum is 2.87 Msun.			                                                          
02193-0259  JOY   1 - The primary is Omicron Ceti, prototype of the Mira-type variables.            
                      All distant companions are optical. B has in the past been                    
                      identified as a Cepheid, VZ Cet, however, it appears that the                 
                      component seen as variable is the Joy component. Recent papers                
                      (in particular PhD thesis by Harold L. Chambers II; ADS code                  
                      1995PhDT........35C) suggest that the visible companion is not                
                      the star itself, but accretion disc around it (material captured              
                      from Mira's stellar wind). Rapid fluctuations of brightness are               
                      described in Warner, B. (1972 MNRAS, 159, 95).                                
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
02211+4246  STF 248 - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Combined spectroscopic/visual solution, yielding masses, etc.         Trr1995a
02225-2349  kap For - photocentric (astrometric) orbit based on combination of ground-      Gon2002 
                      based catalogs with Hipparcos. Errors are given for all elements.             
02231+7021  MLR 377 - Omega corrected from 0.0 to 180.0                                     Ruy1995 
02232-2952  BU  738 - T incorrectly listed as 1953.489; should be 1953.849                  Sca1990a
                      (erratum noted in Inf. Circ. 112, 1990)                                       
                    - Parabolic orbit.                                                      Fin1969b
                      sigma = areal constant in the true orbit = 0.0199 arcsec^2/yr                 
                      q = periastron distance in the true orbit = 0".4991                           
02246-4050  GC 2912 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Barker et al. (1967).                                                 Brk1967 
02257+6133  STF 257 - The primary is SB1 V559 Cas, P = 1.58 d.                                      
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
02288+3215  WOR   2 - Tamazian et al. derive a dynamical mass sum of 1.40 +/- 0.25 Msun     Tam2005 
                      and classify the stars as K6-7V and M0V. Absolute magnitudes of               
                      the two components are estimated at +8.0 and +8.6, leading to                 
                      individual masses of 0.65 and 0.61 Msun, in good agreement with               
                      the dynamical mass sum.                                                       
02291+6724  STF 262 + CHR   6                                                                       
                    - Iota Cas. The primary is an unresolved binary, also an Alpha CVn              
                      type variable, P = 1.74 d, and an astrometric, spectroscopic, and             
                      spectrum variable (Rakos, Lowell Obs. Bull. 5, 227, 1962;                     
                      Klock, AJ 70, 176, 1965). The RV variation has not been confirmed.            
                      Heintz (1962) also detected this pair as a submotion to the visual    Hei1962 
                      orbit of the AB pair with a period of 52 years and an amplitude of            
                      0".11. Star C (mag. 8.4, dG4) is probably physical, but Hopmann       Hop1960b
                      (1960) computed a hyperbolic orbit for it, as there is some RV                
                      difference between C and A.   q = periastron distance in the true             
                      orbit = 6".7056. All hyperbolic orbits were rejected from the                 
                      Fourth and subsequent catalogs.                                       Wor1983 
                    - Aa-B-C quadruple solution (AB in HIP). High mass-sum, strangely       Sod1999 
                      well-behaved speckle obs at  Delta m=4?                                       
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Solution for Aa incorporating motion of AB pair. The authors                  
                      conclude that the motion of B relative to the CHR pair appears to             
                      be rectilinear. Masses of the CHR components are derived.             Dru2003 
02318+8916  STF  93 - Alpha UMi = Polaris. Cepheid variable.                                        
                    - Combined astrometric/spectroscopic solution                           Ger1936 
                    - Wyller orbit rejected from Fourth Catalog ("amplitude below noise     Wye1957 
                      level")                                                               Wor1983 
                    - Combined astrometric/spectroscopic solution, including mass                   
                      estimates, etc.                                                       Wln2000 
                    - Component B (mag 8.8, 18") is physical. See discussion of this                
                      multiple system by Roemer.                                            Re_1965 
02329+3433  GC 3048 - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
02361+0653  PLQ  32 - PGC 888. Proper motion of A +1811 +1451 (FK5). SB.                            
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
02366+1227  MCA   7 - 31 Ari. This system has a small Delta m (~0.1 in the blue, 0.3 in             
                      the red) as determined from lunar occultation measures by                     
                      Africano et al.                                                       OCC1978b
                    - Orbit includes errors for individual elements.                        Bag1989b
02379+2003  A  2219 - Two orbit solutions                                                   Hei1997 
02396-1152  FIN 312 - Epsilon Cet.                                                                  
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - combined solution of astrometric orbits and DSBs. Paper includes      Are2000 
                      masses, distances, and errors.                                                
02407+2637  STT  43 - Orbit preliminary because the arc of the observed orbit is only 90    Sca2001d
                      degrees and is placed completely around aphelion. The Hipparcos               
                      parallax of 0".01385 +/-  0.00125 gives a mass sum of 3.1 Msun, an            
                      overestimate for a star of type F7V. Dynamical parallax of 0".0149            
                      agrees well with the measured one.			                                         
02422+4012  MCA   8 - 12 Per. SB2 resolved by speckle interferometry. The elements          McA1978a
                      P = 331.0 d, T, e, and the longitude of periastron are from the               
                      spectroscopic orbit by Colacevich (Oss. e Mem. Arcetri, No. 59, 16,           
                      1941). Errors are given for individual elements.                              
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Colacevich (1941).                                                    Cla1941 
                    - Orbit includes errors for individual elements.                        Mrn1998 
                    - Solution combining speckle data with data from CHARA Array. authors   Bgn2006 
                      derive orbital parallax 41.19 +/- 0.21 mas, masses 1.382 +- 0.019             
                      and 1.240 +- 0.017 Msun, and magnitude difference 0.409 +/- 0.013             
                      mags in K' (2136 nm). Values for omega and Omega are switched in              
                      their Table 3.                                                                
02424+2001  BLA   1 - Mu Ari. Occultation binary, known to have variable radial velocity.   Bag1984b
02433+1926  GC 3272 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin et al. (1985).                                                Grf1985b
02434-6643  FIN 333 - More speckle obs needed to define orbit.                                      
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
02435+2742  35 Ari  - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Abt & Levy (1978).                                                    AbH1978 
02442+4914  STF 296 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                      Data appear equally well fit by rectilinear solution - see catalog.           
02460-0457  BU   83 - BU 83p orbit calculated from perturbations seen to rectilinear        Dom1972a
                      motion.                                                                       
02537+3820  BU  524 - 20 Per. Star A is a suspected variable of Delta Scuti type. A                 
                      suspected spectroscopic 3.5 yr period has not been confirmed                  
                      (Scarfe & Fekel, PASP 90, 297, 1978). The long-period alternative             
                      (P = 63 yr) for AB is now ruled out. Star C (mag. 9.68, 14")                  
                      is physical; AB-C = STF 318.                                                  
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Orbit includes mass determination.                                    Ari1999 
                    - Orbit includes mass determination.                                    Doc2001c
02543+5246  LAB   1 - Tau Per. Spectrum composite; G4III+A4V. SB1; the elements P, T, e,    McA1981c
                      and the longitude of periastron are from the orbit by Colacevich              
                      (Oss. e Mem. Arcetri, No. 59, 16, 1941). Speckle observations have            
                      resolved the pair and invalidate an astrometric solution by Kamper    Kam1969a
                      (1969). Errors are given for individual elements.                             
                    - The 52" distant, visual double companion (mags. 11 and 12, 3.5")              
                      may be physical.                                                              
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Demircan & Selam (1992).                                              Dmr1992 
                    - van de Kamp & Andersen orbit rejected from Fourth Catalog             Kam1969a
                      ("amplitude below noise level")                                       Wor1983 
02556+2652  STF 326 - Parabolic orbit.                                                      Hop1967 
                      sigma = areal constant in the true orbit = 0.05215 arcsec^2/yr                
                      q = periastron distance in the true orbit = 2".827                            
                      Data appear equally well fit by rectilinear solution - see catalog.           
02572+0153  A  2413 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - This orbit is now well defined and will certainly change little in    Sca2001d
                      the future; only the period is still slightly uncertain. The                  
                      Hipparcos parallax is 0".02012 +/- 0.00150. This gives a mass sum             
                      of 2.1 Msun +/- 29%, agreeing very well with expected values for a            
                      system of type G0. Compared to the orbit calculated by Scardia in             
                      1980, the total mass of the system, whose uncertainty was then 55%,           
                      is now much better defined. The dynamical parallax is 0".0193, well           
                      in agreement with the measured parallax.                                      
02586+2408  BU 1173 - Star C (mag. 13, 4.6") is probably physical.                                  
03048+5330  WRH  29 - Gamma Per. Spectrum composite; G8III+A2V. SB2, with elements P, T,    McA1982a
                      e from the orbit by McLaughlin (AJ, 53, 200, 1948). Pair is now               
                      resolved by speckle interferometry. The physical nature of the                
                      visual companion B (57", mag. 11) is uncertain.                               
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      McAlister (1982).                                                     McA1982a
03082+4057  LAB   2 - Beta Per. Algol, prototype of the Algol-type binaries. The well-              
                      known eclipsing binary, a radio and X-ray source, is triple (and              
                      possibly quadruple, but the variation with the 32 yr period is more           
                      probably an apsidal rotation of the eclipsing pair). The third star,          
                      with the spectroscopically determined 1.8 yr period has been                  
                      resolved by speckle interferometry; the magnitude difference is               
                      about 2.5. The spectroscopic data were discussed by Hill et al.       HlG1970 
                      (1970, 1971). ADS lists several distant, faint, and probably          HlG1971 
                      optical companions.                                                           
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Elements P, T, e, and omega adopted fomr the spectroscopic orbit      Lab1979 
                      of Hill et al. (1971). Errors included for individual elements.       HlG1971 
                    - Astrometric solution adopting some elements from the orbits of        HIP1997d
                      Pan et al. (1993) and                                                 MkT1993a
                      Gatewood et al. (1995).                                               Gat1995 
03121-2859  HJ 3555 - Alpha For. The magnitude of B is uncertain and has been suspected to          
                      vary. Another century is needed for apastron coverage.                        
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
03122+3713  STF 360 - Data appear equally well fit by rectilinear solution - see catalog.           
03124-4425  JC    8 - AB-C = HJ 3556. Star C (mag. 9.2, 3.5") is in slow retrograde                 
                      motion. Variable RV of AB, not explained by the visual motion, has            
                      been reported (Eggen 1965), but Heintz's mass ratio does not support  Egg1965b
                      the presence of a fourth body.                                        Hei1979a
03127+7133  STT  50 - Bespalov (1961) has a = 1".618, Finsen & Worley (1970) assume this    Bsp1961 
                      is a misprint.                                                        Fin1970b
03184-0056  AC    2 - 95 Cet. According to Eggen this pair shares common proper motion      Egg1960 
                      with BD -01 474.                                                              
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
03236-4005  I   468 - Possible orbit from two widely spaced vis obs + Hipparcos data.       Sod1999 
03244-1539  A  2909 - Star C (mag. 13.5, 17") may be physical.                                      
03279-1948  GC 4128 - Astrometric solution assuming circular orbit (e = omega = 0);         HIP1997d
                      errors given for individual elements. Cluster Melotte 25 #EGG21.              
03309+1256  5 Tau   - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Harper (1924).                                                        Hrp1924 
03337+5752  CHR 117 - Cf orbit in McAlister et al. (1992).  High-space-velocity binary.     McA1992 
03342+4837  BU  787 - C does not exist (van den Bos). Optical pair?                                 
03344+2428  STF 412 - 7 Tau. Spectrum composite; A3V+A3V. C (mag. 9.92, 22") is physical.           
                    - Only P, T, and a were redetermined by Vlaicu & Vasile (1961); the     Vla1965 
                      remaining elements were from the orbit of Luyten (1934).              Luy1934c
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
03368+0035  STF 422 - V711 Tau. Star A has variable RV. RS CVn type variable, P = 2.8 d.            
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
03375+3107  GC 4314 - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
03402-1936  GC 4392 - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
03422+6313  BD Cam  - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin (1984).                                                       Grf1984c
03426+1718  GC 4435 - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
03442-6448  bet Ret - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Jones (1928).                                                         Jon1928a
03448+4602  BAG   8 - Combined astrometric/spectroscopic solution, including masses.        Bag2002b
03463+2411  BU  536 - In the Pleiades. The motion so far is rectilinear.                    Hzg1958 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Both elliptical orbit and rectilinear trajectory were calculated by           
                      Popovic & Pavlovic (1995). See also rectilinear catalog.              Pop1995d
03474+2255  HD 23610- Astrometric solution assuming circular orbit (e = omega = 0);         HIP1997d
                      errors given for individual elements. Cluster Melotte 22 #1407.               
03480+6840  KUI  13 - Star A (mag. 9.3, 17", K5) is physical. See discussion by                     
                      van de Kamp & Chao-Yuan Yang (1967).                                  Kam1967 
03491+4358  V376 Per- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
03492+2403  MKT  12 - Astrometric solution assuming circular orbit (e = omega = 0).         HIP1997d
                      Cluster Melotte 22 #2168. Atlas.                                              
                    - Orbit based on Mark III and PTI measures. A distance to the Pleiades  PTI2004 
                      of 135 +/- 2 pc is determined. Masses for the components are                  
                      calculated as 4.90 +/- 0.28 and 3.65 +/- 0.08 Msun.                           
                    - Orbit based on published Mark III and PTI measures, plus additional   Zwa2004 
                      Mark III and NPOI astrometric data and ELODIE echelle spectra. This           
                      combined spectroscopic/interferometric solution yields masses of              
                      4.74 +/- 0.25 and 3.42 +/- 0.25 Msun; distance 132 +/- 4 pc found             
                      agrees with "traditional" Pleiades distances obtained through MS              
                      fitting techniques.                                                           
03501+4458  CHR 126 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      P'edoussaut et al. (1987).                                            Ped1987 
03503+2535  STT  65 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
03545+0510  A  1831 - Star A = V 479 Tau is a Delta Scuti-type variable. A-BC (60") is              
                      probably a physical system.                                                   
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
03575-0110  BU  543 - The primary is suspected to flare.                                            
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
03590+0947  HU   27 - Value of omega incorrectly given as 263.1 in IAU Inf. Circ. 144.      Lin2001b
                    - Derived orbital parallax 0".01239, mass sum 1.94 +/- 0.82 Msun        Lin2004a
04044+2406  MCA  13 - 36 Tau. A is an occultation binary, now resolved by speckle                   
                      interferometry.                                                               
04076+3804  STT 531 - Common proper motion with BD +37 882 = 50 Per at distance of 11'.8.   Gic1961 
                      The primary is V491 Per.                                                      
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
04089+2911  BU 1232 - Only elements P, T, and a have been amended from the orbit of         Sta1980b
                      Muller (1978).                                                        Mlr1978a
                    - Griffin et al. (1988 AJ, 96, 172) find this to be a SB but doubt      Msn1993a
                      its membership in the Hyades in spite of its inclusion by Wayman              
                      et al. (1965 Royal Obs. Bull., 98).                                           
04093-0756  A   469 - Only elements P and T have been amended from the orbit of             Sta1984 
                      Baize (1981).                                                         Baz1981b
04130+5237  PRV   1 - GJ 164. Discovered by Palomar 5m/STEPS astrometry and confirmed       Prv2004 
                      using HST/NICMOS, the combined solution yielded an absolute parallax          
                      of 0".0820 +/- 0".008, spectral types M4.5V and M6-8V and masses of           
                      0.170 +/- 0.015 and 0.095 +/- 0.015 Msun. Inclination = 57 +13/-17,           
                      omega = 133 +45/-20 deg.                                                      
04136+0743  A  1938 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Heintz (1984).                                                        Hei1984b
04142-4608  RST2338 - Half-period solution equally good, but gives large mass-sum.                  
                      More speckle-obs needed (the only existing one erroneous?).                   
04142+2813  GHE   1 - Solution includes errors and mass determination based on estimated            
                      distance.                                                             Tam2002 
04148+2813  GHE   2 - Solution includes errors and mass determination based on estimated            
                      distance.                                                             Tam2002 
04149+4825  STT  73 - mu Per. The elements P, T, and e of Alden were adopted from the       Ald1925 
                      spectroscopic orbit of Cannon (Pub. DAO Ottawa 2, 365, 1915).                 
04153-0739  STF 518 - Star A (mag. 4.43, 82", K0V) is physical, and also named Omicron 2            
                      Eri. Star B is a white dwarf; star C is a flare suspect, DY Eri, and          
                      a strong X-ray source.  Omicron 1 Eri at 83" is physical, and is a            
                      Delta Scuti star showing coronal X-ray emission.                              
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
04159+3142  STT  77 - Star C (mag. 8.51, 56", F8) is physical.                                      
04163-6057  GLE   1 - Variable: TT Ret.                                                             
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
04170+1941  HO  328 - Only elements P and T have been amended from the orbit of             Sta1980b
                      Heintz (1978).                                                        Hei1978a
04179+5847  STF 511 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
04182+5018  b Per   - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Hill et al. (1976).                                                   HlG1976 
04184+2135  MCA  14 - 51 Tau. Hyad (vB 24). Combined spectroscopic/astrometric solution.    Trr1997a
                      Orbital parallax 0.01792 /- 0.00058, masses 1.80 +/= 0.13 and                 
                      1.46 +/- 0.18 Msun.                                                           
                    - Orbit includes errors for individual elements.                        Bag1989b
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Deutsch & Lowen (1971).                                               Deu1971 
04199+1631  STT  79 - Hyad (vB 29). SB according to Griffin et al. (1988 AJ, 96, 172).      Msn1993a
04209+1352  Melotte 25 VA 201                                                                       
                    - P = 3.0591080 +/- 0.000011 d, T = 44497.185696 +/- 0.0026 MJD.        Knc2004 
                      Combined spectroscopic/interferometric solution  (Palomar Testbed             
                      Interferometer), assuming eccentricity = 0.0 and K-band brightness            
                      ratio = 1.0, yielding masses 1.38 +/- 0.13 and 1.39 +/- 0.13 Msun,            
                      spectral types F6V, diameters 0.25 mas.                                       
04215-2544  BU  744 - Star C (mag. 12, 38") is optical. D (mag. 8.19, 45") is physical.             
                      Star A is SB1, P = 4.0 d, tho this may be spurious,                   Wor1983 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
04220+2658  SMN   9 - Solution includes errors and mass determination based on estimated            
                      distance.                                                             Tam2002 
04220+1932  KRS   2 - Ba,Bb. Tamazian derives a total system mass of 2.82 +/- 0.74 Msun,    Tam2005 
                      consistent with the IRC model of Koresko et al (1997 ApJ 480, 741).           
04227+1503  STT  82 - Hyad. The primary is SB1, P = 4.00 d (Sanford, ApJ 53, 201, 1921).            
                      Also a wider companion (LDS 1166 AC, rho = 62", M = 17.8).                    
04233+1123  STF 535 - Ruymaekers & Nys (1995) noted discrepancies in the orbit of Popovic   Ruy1995 
                      (1982), and calculated elements from their Thiele-Innes elements.     Pop1982a
04234+1940  V988 Tau- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin et al. (1985).  Hyades vB43.                                  Grf1985b
04239+0928  HU  304 - AO photometric analysis includes mass determination.                  TtB2000 
04256+1556  FIN 342 - Hyad (vB 57). Combined spectroscopic/astrometric solution. Orbital    Trr1997b
                      parallax 0.02144 +/- 0.00067, masses 1.363 +/= 0.073 and 1.253 +/-            
                      0.075 Msun.                                                                   
                    - Quadrant determinations made at several epochs by McAlister et al.    McA1988 
                      et al. (1988) have shown that this system is best represented by an           
                      eccentric orbit of period 6.3 years, rather than a circular 13-year           
                      orbit. Orbit includes errors for individual elements.                         
                    - Orbit includes errors for individual elements.                        Bag1989b
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
04259+1852  BU 1185 - Hyad (vB 58).                                                                 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
04263+3443  HU  609 - Only elements P and T have been amended from the orbit of             Sta1978c
                      Heintz (1967).                                                        Hei1967d
04271+2542  THB   1 - Solution includes errors and mass determination based on estimated            
                      distance.                                                             Tam2002 
04275-2427  I   413 - Value of omega incorrectly listed as 96.0, same as Omega.             Baz1993b
04286+1558  MCA  15 - Theta 1 Tau. Hyad (vB 71), Combined spectroscopic/astrometric         Trr1997c
                      solution. Distance (from relative proper motions and orbital                  
                      parallax of Theta 2 Tau) 47.6 +/- 1.9 pc, masses 2.91 +/= 0.88 and            
                      1.31 +/- 0.14 Msun. Masses and distance of HR 1412 = Theta 2 Tau are          
                      derived from spectroscopic elements, adopting astrometric elements            
                      from Pan et al (1992 IAU Colloq 135, 502).                                    
                    - An estimate of Delta m = 0.76 was made by Dombrowski (1991), as       Dmb1991 
                      quoted by Mason et al. (1993)                                         Msn1993a
                    - Hege et al. (1983) suggest a possible third component.                Heg1983 
04287+1552  HR 1412 - Theta 2 Tau = Hyades vB 72. Data from lunar occultations,                     
                      spectroscopy, and Mark III astrometry are combined to generate                
                      orbital elements. Distance and component masses and absolute                  
                      magnitudes are derived from these elements.                           Trr1997c
04290+1610  HU 1080 - Hyad (VB 75); RV possibly variable, as noted by Wilson (ApJ 107,              
                      119, 1948)                                                                    
                    - Delta m = 0.65 mag was determined by Dombrowski (1991), as quoted     Dmb1991 
                      by Mason et al. (1993)                                                Msn1993a
04293+1733  HD 28394- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin et al. (1985).  Hyades vB77.                                  Grf1985b
04301+1538  STF 554 - 80 Tau. Hyad. Star A is SB1, P = 30.5 d                               Hei1981e
                    - AO photometric analysis includes mass determination.                  TtB2000 
04309+5902  STI2051 - Triple. A is an astrometric binary. Star B (mag. 12.44, 8", DC) is            
                      a white dwarf, in slow retrograde motion about the mass-center.               
04316+1743  VVO 394 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin et al. (1985). Hyades VA 627.                                 Grf1985b
04325+1732  LEI   3 - Solution includes errors and mass determination based on estimated            
                      distance.                                                             Tam2002 
04338+1451  rho Tau - Astrometric solution assuming circular orbit (e = omega = 0);         HIP1997d
                      errors given for individual elements. Hyades VA 725.                          
04340+1510  B  2092 - Hyad (vB 96). High mass-sum, illustrative solution only, speckle/             
                      spectroscopic orbit needed, cf. Griffin et al. (1988 AJ, 96, 172).            
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
04357+1010  CHR  18 - 88 Tau. A is an Alpha CVn-type variable, and SB, now resolved by              
                      speckle interferometry.                                                       
04362+0814  A  1840 - Star C (mag. 9, 6") is probably physical.                                     
04364+3413  HU  610 - Only elements P, T, and a have been amended from the orbit of         Sta1978c
                      Baize (1961).                                                         Baz1961b
04367+4116  58 Per  - Wyller orbit rejected from Fourth Catalog                             Wye1957 
                      ("not confirmed by subsequent observations")                          Wor1983 
04382-1418  KUI  18 - 53 Eri. K1III spectrum.                                                       
04400+5328  BU 1295 - 2 Cam. The high-eccentricity solution for AB by Valbousquet (1980)    Val1980b
                      is questioned by Heintz (1962) on grounds of a mass discrepancy.      Hei1962 
04422+0259  A  2424 - Two orbit solutions.                                                  WRH1976 
04430+5712  A  1014 - Only elements P, T, and a have been amended from the orbit of         Sta1978c
                      Baize (1958).                                                         Baz1958 
04475+4324  A  1544 - Star C (mag. 10.2, 1.4") is in slow retrograde motion.                        
04505-3834  GC 5916 - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
04506+1505  CHR  20 - Hyad (vB 120). Preliminary circular orbit, speckle/spectroscopic              
                      orbit needed, cf. Griffin et al. (1988 AJ, 96, 172).                          
04512+1104  BU  883 - Hyad (vB 122). Mass-sum calls for sp subsystem, but RV-ampl <1km/s            
                      according to Griffin et al. (1988 AJ, 96, 172).                               
                    - Delta m = 0.19 was determined by Dombrowski (1991).                   Dmb1991 
                    - AO photometric analysis includes mass determination.                  TtB2000 
04518+1339  BU  552 - Hyad (vB 124). The primary is 143d SB (Griffin et al. 1985 AJ, 90,            
                      609). A faint component (about mag. 13, 45") is unobserved since              
                      1906; its physical nature is unknown.                                         
04560+3021  SFN   1 - combined solution yielding masses and orbital parallax.               Sfn2000 
                    - combined solution yielding masses and orbital parallax.               Sfn2001 
04563+5206  HU  555 - Star C (mag. 9.62, 4") is physical; AB-C = STF 608. Eggen's orbit     Egg1965 
                      depend on van den Bos' single night result (1962.85, 318 deg, 0".10)          
                      which does not fit Baize's orbit.                                     Baz1959 
04573+5345  D     5 - 7 Cam. The primary is SB1, P = 3.884 d (Lucy & Sweeney, AJ 76, 544,           
                      1971). Star C (mag. about 11.3, 26") may be physical.                         
04590-1623  BU  314 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
04599+5327  A  1303 - T corrected from 200.74 to 2000.74                                    Ruy1995 
05005+0506  STT  93 - Hyperbolic orbit.                                                     Jnv1966 
                      sigma = areal constant in the true orbit = 0.00576 arcsec^2/yr                
                      q = periastron distance in the true orbit = 0".366                            
05017+2050  HU  445 - Only elements P and T have been amended from the orbit of             Sta1977a
                      Baize (1957).                                                         Baz1957a
05017+2640  A  1844 - Masses and bolometric magnitudes are derived for the two components   Msn1999a
                      of this system, based on assumed spectral types and available                 
                      parallaxes.                                                                   
                    - Star C (mag. 8.22, 79") is physical; AB-C = S 461.                            
                    - Visual separations systematically too small.                                  
05020+4349  eps Aur - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Heintz & Cantor (1994).                                               Hei1994b
                    - Strand orbit rejected from Fourth Catalog                             Str1959 
                      ("amplitude below noise level")                                       Wor1983 
                    - Also a spectroscopic and eclipsing binary                             Fin1970b
05025-2115  DON  91 - Good period, indeterminate a/e/i, more obs needed!                    Hei1978c
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
05025+4105  MKT   6 - Zeta Aur. Eclipsing binary (K4IB + B5V). Combined solution using      MkT1996 
                      astrometry from Mark III interferometer, spectroscopy from HST                
                      Goddard High Resolution Spectrograph, and published photometry to             
                      determine masses, radii, etc. Positions of component stars on                 
                      theoretical H-R diagram are compared to current evolutionary models.          
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Wright (1970).                                                        Wri1970 
05051+0608  HD 32662- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
05067+1427  GC 6239 - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
05074+1839  A  3010 - 104 Tau. Visual and speckle observations at 0".1 sep ruled out as             
                      spurious by constant RV (Duquennoy & Mayor, 1991 A&A, 248, 485).              
                    - Two orbit solutions (Eggen 1956). Observations of this close pair     Egg1956 
                      are so scattered that both orbits are highly conjectural.                     
05079+0830  STT  98 - 14 Ori. One component, probably the primary, is SB; the RV range in           
                      the combined light is 22 km/s. According to Eggen, the system         Egg1963 
                      shares common proper motion with ADS 3712 (mags. 9.5-9.5, 3", K2),            
                      which is 6' distant.                                                          
05084+5525  GC 6249 - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
05135+0158  STT 517 - Star C (mag. 13, 7") may be physical.                                         
05140+5126  HU  821 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
05157-4927  GC 6457 - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
05167+4600  ANJ   1 - Capella. Composite spectrum; G5IIIe+G0III.                                    
                    - Combined spectroscopic/interferometric orbit: P = 104.0237 d,         Hei1974a
                      a = 0.0547", eccentricity neligibly small. Ascending node revised             
                      according to Heintz's astrometry                                              
                    - Colors and spectral types determined by speckle photometry are        Bgn1988 
                      given by Bagnuolo & Sowell (1988).                                            
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Hummel et al. (1994).                                                 MkT1994 
05177+4551  ST    3 - Capella HL, the distant (723") double companion to Capella with               
                      common proper motion.                                                         
05182+3322  STT 103 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Christie (1936).                                                      CWH1936 
05226+0236  A  2641 - Only elements P and T have been amended from the orbit of             Sta1978c
                      Baize (1957).                                                         Baz1957b
05239-0052  A   847 - Star A (mag. 6.8, 2", dF7) is physical. A is SB. AB-C = WNC 2.                
05245-0224  MCA  18 - Eta Ori. Quintuple; the primary is a double-lined spectroscopic       McA1976 
                      triple with periods 7.99 d (Aab) and 9.2 yr (Aab-c). The close pair           
                      eclipses, and shows an 8-hour pulsation in one of the components.             
                      Using the elements P, T, e, and the longitude of periastron for the           
                      9-year orbit, from a spectroscopic orbit by Ziska & Beardsley                 
                      (AJ 86, 1944, 1981), and assuming the orbit edge-on, the semi-axis            
                      major and the node are based on a single speckle observation. The             
                      ascending node has been reversed.                                             
                    - The visual companions are star B (mag. 4.8, 1.5") in slow retrograde          
                      motion, and C (mag. 9.4, 115").                                               
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
05248-5219  I   345 - Quoted errors in P and a are +259/-54y, +0".20/-0".01, respectively.  Ary2002b
05255-0033  A   848 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
05272+1758  MCA  19 - 115 Tau. A is an occultation binary which has been resolved by                
                      speckle interferometry.                                                       
05308+0557  STF 728 - 32 Ori. The motion is still practically rectilinear, as represented   B__1956b
                      in formulae by van den Bos (1956) and Cester  (1964).                 Ces1964 
05330-6414  28 Dor  - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Lunt (1924).                                                          Lun1924 
05364+2200  STF 742 - The node and longitude of periastron have been corrected.                     
05386+3030  BU 1240 - 26 Aur. Light variability is suspected. Star C (mag. 8.57, 12", F0V)          
                      is physical. Composite spectrum; B9.5V+F9III.  AB-C = STF 753.                
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Only elements P and T have been amended from the orbit of             Sta1977a
                      Baize (1956).                                                         Baz1956 
05387-0236  BU 1032 - Sigma Ori. Brightest pair in a trapezium system (STF 762) which               
                      includes the components C (mag. 8.79, 11", A2V), D (mag. 6.62, 13",           
                      B2V), and the helium-rich star E (mag. 6.5, 42", B1Vp). Heintz        Hei1974b
                      (1974) gives formulae for the motions AB-C and AB-D. The suspected            
                      small RV variation of AB was not confirmed in David Dunlap Obs.               
                      spectra.                                                                      
                    - Fullerton (1990, PhD thesis, U. of Toronto) describes three spectral          
                      components in the He I 5876 A profile which suggests that one of the          
                      stars is an SB2 (see Bolton 1974, ApJL, 192, 7).                              
                    - A is variable, V1030 Ori.                                                     
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
05389-0713  49 Ori  - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Abt (1965).                                                           AbH1965 
05407-0157  STF 774 - Zeta Ori. Levato et al. (ApJS, 68, 319, 1988) and Fullerton (1990,            
                      PhD thesis, U. Toronto) report small RV variations (<35 km/sec),              
                      although not confirmed. Star C (mag. about 9, 60") may be physical.           
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
05413+1632  BU 1007 - 126 Tau. Spectroscopic subsystem probable; the RV range of the                
                      blended light is about 50 km/s.                                               
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
05417-0254  BU 1052 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
05429-0648  A   494 - Suspected RV variation not confirmed (Heintz 1981). The faint pair            
                      CD (mag. 10-13, 1.0") is 100" distant from AB.                                
05482+0137  A  2657 - Only elements P, T, and a have been amended from the orbit of         Sta1978c
                      Baize (1961).                                                         Baz1961b
05484+2052  STT 118 - A component is SB.                                                            
05544+2017  chi1Ori - Combined astrometric/spectroscopic solution.                          Irw1992a
05589-3422  GC 7577 - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
05595+4457  KOE   1 - Beta Aur.                                                                     
                    - Visual orbit based on astrometry from Mark III interferometer.        MkT1995 
                      Additional spectroscopic data yield component masses, luminosities,           
                      radii, effective temperatures, and distance.                                  
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Hummel et al. (1995).                                                 MkT1995 
06003-3102  HU 1399 + HJ 3823                                                                       
                    - AB-C triple solution (HIP data unuseable!). Speckle obs needed to     Sod1999 
                      strengthen orbit.                                                             
                    - Star D is optical.                                                            
06024+0939  A  2715 - Mu Ori. Alden (1942) orbit is visual. P, T, e in Osvald's (1964)      Ald1942 
                      astrometric orbit  are taken from a revised visual orbit by Alden     Osv1964 
                      (cf Osvald's paper); the revised a = 0.254". The different types of           
                      orbits cause the longitude of the node to be in opposite quadrants.           
                    - Star A is an Alpha CVn variable and SB1, P = 4.45 d; star B is SB2,           
                      P = 4.78 d (F. Fekel 1981, PASP 93)                                           
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Only elements P and T have been amended from the orbit of             Sta1977a
                      Alden (1942).                                                         Ald1942 
                    - Combined spectroscopic/astrometric solution for the wide pair of      Fek2002 
                      this quadruple system, plus spectroscopic orbits for both short-              
                      period pairs. Solution includes mass and distance determination.              
06035+1941  MCA  24 - 64 Ori. SB and occultation triple, with the wider pair, presumably,           
                      now resolved. Fekel & Scarfe (1986, AJ, 92, 1162) report periods              
                      of 14.57d and 13.03yr.                                                Msn1997a
06041+2316  KUI  23 - 1 Gem. Primary 9.6d SB1 (#377 in Batten et al., 1989 PDAO, 17, 1),            
                      sec K1III (Strassmeier & Fekel, 1990 A&A, 230, 389), and reported             
                      to be an occultation binary. Mass sum close to expected.                      
                      Identification of the ascending node of the visual pair in the third          
                      quadrant is confused by the submotion and therefore not entirely              
                      certain.                                                                      
06048-4828  DUN  23 - Variable?                                                                     
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
06098-2246  RST3442 - High mass-sum                                                         Hrt1996a
06149+2230  BU 1008 - Eta Gem. The primary is a semiregular variable, occultation binary,           
                      and SB1, P = 8.17 yr. (ApJ 100, 63, 1944).                                    
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
06171+0957  FIN 331 - 75 Ori. This pair and the distant optical companions B and C form             
                      BU 96. The pair CD, 2' distant, is J 408 (5").                                
06187+0903  GC 8096 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin (1986).                                                       Grf1986b
06196+5901  UZ Lyn  - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
06200+2826  BU  895 - Star C (mag. 9.2, 3") is physical; AB-C = STF 888.                            
06214+0216  A  2667 - One component variable?                                                       
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
06221-3326  del Col - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Jones (1928).                                                         Jon1928b
06247+2503  GC 8261 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin (1986).                                                       Grf1986a
06262+1845  BU 1191 - A is SB, P = 6.99d. It is also one of the brightest BY Dra-type               
                      variables known, OU Gem.                                                      
06290+2013  BTZ   1 - Nu Gem. Probably SB, now resolved.                                            
06293-0248  B  2601 - Ross 614. Good resolved solution with the aid of scattered visual             
                      and IR speckle observations. Mass-ratio calculated from pc orbit              
                      size. Star B is the flare star V577 Mon; star A is also suspected             
                      to flare.                                                                     
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Lippincott (1955) orbit is based on the astrometric elements          Lip1955 
                      combined with Baade's observation of the companion in 1955.                   
                    - Combined solution from astrometry, spectroscopy, and parallax.                
                      Solution includes errors and yields mass and orbital parallax                 
                      determination.                                                        Sgr2000 
06298-5014  R    65 + HDO 195                                                                       
                    - AB and CD form the multiple system DUN 30 (12"). AB probably                  
                      contains another component, as the RV varies more than can be                 
                      accounted for by the visual motion alone. Difficult a/e/i-                    
                      correlation, more obs needed.                                                 
06322-6519  HD 47121- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
06328-1110  CHR 129 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      McClure (1983).                                                       Mcr1983 
06377+1624  BUP  90 - Gamma Gem. Elements P, T, e, and the longitude of periastron are      Bey1967 
                      from a spectroscopic orbit. Beardsley's data are inconsistent; the            
                      values of a, i, and the node given here approximate his ABFG most             
                      closely.                                                                      
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
06377+1624  gam Gem - Aa component. Combined astrometric/spectroscopic solution. Fekel &    Kpr1987b
                      Tomkin (1993) derive a spectroscopic period of 4614.0 +/- 0.7 days,   Fek1993 
                      as well as an approximate magnitude difference of 6.0 +/- 0.5 mag in          
                      V. An additional spectroscopic solution by Scholz et al. (1997)       Slz1997 
                      yielded a period of 4614.51 +/- 0.47; Lehmann et al. (2002) found     Leh2002 
                      a similar period and also looked for short-period variations.                 
06384+2859  MCA  27 - 53 Aur. An occultation and interferometric binary.                            
06410+0954  CHR 168 - A component is an irregular variable, S Mon. See Gies (1993) for      Gie1993a
                      classification of the speckle companion. The spectroscopic orbit and          
                      current periastron passage of Aa are discussed by Gies (1997), who    Gie1997 
                      who also give errors for individual elements.                                 
06418+3041  A   218 - Three orbit solutions                                                 Hei1997 
06424+1739  26 Gem  - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
06425+6612  MLR 318 - omega corrected from 309.0 to 129.0                                   Ruy1995 
06451-1643  AGC   1 - Sirius. The formerly suspected duplicity of the white dwarf                   
                      companion is unconfirmed.                                                     
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Gatewood & Gatewood (1978).                                           Gat1978 
06462+5927  STF 948 - 12 Lyn. Star C (mag. 7.4, 8") is physical.                                    
06479+0225  18 Mon  - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin (1984).                                                       Grf1984d
06499-5037  tau Pup - Astrometric solution adopting some elements from the orbits of        HIP1997d
                      Schroeder & Huensch (1992) and                                        SKP1992 
                      Wilson & Huffer (1918).                                               WRE1918 
06499-5337  V415 Car- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Jones (1928).                                                         Jon1928a
06541+6052  HEI 334 - L1815-5. Long-period astrometric binary now resolved.                         
                    - Fixed e, i, omega, Omega from Heintz (1990). Needs combined           Hei1990c
                      astrometric/visual/Hipparcos solution.                                        
06545-2734  B   706 - Parabolic orbit.                                                      Nwb1966d
                      sigma = areal constant in the true orbit = 0.00318 arcsec^2/yr                
                      q = periastron distance in the true orbit = 0".1522                           
06546+1311  STF 982 - 38 Gem. A is a Delta Scuti-type variable.  Omega and omega in         Hop1974 
                      Hopmann's (1974) orbit have been flipped in orbit catalog to                  
                      better match observations.                                                    
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
06555+3010  STF 981 - Hopmann orbit rejected from Fourth Catalog                            Hop1971 
                      ("period over 4000 years")                                            Wor1983 
06573+5825  STT 159 - G5III-IV spectrum. Period poorly determined from old vis obs.                 
                    - AO photometric analysis includes mass determination.                  TtB2000 
06573-3530  I    65 - A few more speckle observations will strengthen orbit considerably.           
06575+0253  A  2681 - Two orbit solutions; short-period solution seems preferable.          Hei1975b
07038+6727  HD 51708- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
07043-0303  A   519 - Contains a spectroscopic subsystem. The RV range in the blended               
                      light is about 30 km/s.                                                       
07101+2115  GC 9462 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Beavers & Salzer (1985).                                              Bvr1985 
07128+2713  STF1037 - Variable?                                                             Sca1983e
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
07148-1529  BU  575 - Star C (mag. 9, 16") is physical; AB-C = STF 1057.                            
07163+2709  GJ 268.3- combined solution of astrometric orbits and DSBs. Paper includes      Are2000 
                      masses, distances, and errors.                                                
07171-1202  A  2123 - Star C (mag. 9, 16") is physical; AB-C = STF 1064.                            
07175-4659  I     7 - The 94-yr orbit by Heintz (1995) plus the HIP parallax gives          Hei1995 
                      impossibly small mass-sum. Probably both a and P are much larger (no          
                      orbit for another century), but motion should be followed.                    
07201+2159  STF1066 - Delta Gem. Star A is an occultation double and SB1, P = 6.129 yr.             
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Abt (1965).                                                           AbH1965 
07269+2015  CHR  26 - 61 Gem. An occultation and spectroscopic binary, now resolved.                
07277+2127  MCA  30 - 63 Gem. A is an SB and occultation triple, with the wider pair,               
                      presumably, now resolved. Good fit to speckle/Hip, but implausibly            
                      large masses even for a multiple system.  HIP solution spurious.              
                    - Fekel (1986 private communication) detected this system as a third    Msn1997a
                      component in the spectrum and made a preliminary estimate of the              
                      period of 760 days. A combined spectroscopic/speckle orbit was                
                      later undertaken in collaboration with Fekel. This solution                   
                      includes a mass determination.                                                
07292-4318  sig Pup - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Wilson (1917).                                                        WRE1917 
07294-1500  STF1104 - Star C (mag. 10.7, 20") is physical.                                          
07307+4813  GIC  75 + G 107-70                                                                      
                    - Quadruple. The two close pairs are separated by 103". The orbit of            
                      G 107-70 depends upon elongations of blended photographic images.             
                    - While Harrington et al. (1981) do not determine a value for the       Hrr1981 
                      seminajor axis for the close pair, they do determine a period                 
                      (0.94 y), masses of the individual components (0.17 and 0.08                  
                      solar masses) and the distance to the system (parallax = 0."0896).            
                      Application of Kepler's Law yields a = 0."054.  This agrees well              
                      with the statement in Harrington et al. that "The mean separation             
                      of the double would be of the order of 0.05 arcseconds".                      
07345-5258  LTT 2891- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
07346+3153  STF1110 - Alpha Gem. Castor, a sextuple system. Both A and B are SB1's with             
                      P = 9.21 d and 2.93 d, respectively. Star C (mag. 9.1, M1Ve) is the           
                      spectroscopic and detached eclipsing binary YY Gem (P = 0.81 d), 70"          
                      from the center of AB and in slow retrograde motion (cf., Heintz).    Hei1960a
                    - Castor A is also reported to exhibit x-ray and radio emission.                
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
07351-2830  GC 10171- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
07393+0514  SHB   1 - Alpha CMi. Procyon. Two faint stars, each 2' distant, are optical.            
                    - Strand (1951) orbit utilizes radial velocities.                       Str1951 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Irwin et al. (1992).                                                  Irw1992b
07417+3726  STT 177 - Both the Postmas (1963) and Couteau & Laques (1965) orbits depend     Pma1963 
                      on the isolated measures by van den Bos in 1962.                      Cou1965a
07467+2001  RED   9 - 2MASSW J0746425+200032                                                        
                    - Combined spectroscopic/astrometric solution of a binary L dwarf.      Boy2004 
                      Quoted errors are as follows: P: +2.475/-2.100y, a: +0".030/-0".023,          
                      i: +2.5/-3.4deg, node: +9.9/-14.2deg, T: +0.14/-0.09y,                        
                      e: +0.08/-0.09, omega: +5.2/-5.9deg. Semi-major axis given as                 
                      2.53 +0.37/-0.28 AU. Angular values in catalog are based on the               
                      quoted distance of 12.21 +/- 0.05 pc.                                         
                      The total derived mass is 0.146 +0.016/-0.006 Msun.                           
07475+7012  GJ 285.1- combined solution of astrometric orbits and DSBs. Paper includes      Are2000 
                      masses, distances, and errors.                                                
07518-1354  BU  101 - 9 Pup. Discussion of the RV's by Abt & Levy (ApJS 30, 273, 1976).             
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
07528-0526  FIN 325 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
07535+2646  phi Gem - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
07560+2342  COU 929 - Orbit includes mass determination.                                    Msn1997a
08017+6019  MCA  33 - 53 Cam. A variable of the Alpha CVn type, AX Cam, and a SB now                
                      resolved by interferometry.                                                   
                    - Value of omega incorrectly listed as 113.0, same as Omega             Baz1993b
                      (erratum noted in Inf. Circ. 121, 1994).                                      
08017-0836  A  1580 - A is the Algol-type system BV 1594.                                           
08024+0409  STF1175 - Data appear equally well fit by rectilinear solution - see catalog.           
08044+1217  BU  581 - Star C (mag. 10.5, 5") is in slow direct motion about AB.                     
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
08122+1739  STF1196 - Zeta Cnc. 2-orbit AB-Cc quadruple solution (AB-C in HIP).             Sod1999 
                    - The system Cc has been resolved by infrared speckle interferometry.   Mcy1983 
08095+3213  STF1187 - Hopmann orbit rejected from Fourth Catalog                            Hop1971 
                      ("period over 4000 years")                                            Wor1983 
08132-1354  HU  115 - Present parallax value adopted instead of poor HIP-value.             Sod1999 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
08140-4021  h 2 Pup - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Christie (1936).                                                      CWH1936 
08173-0522  A   337 - Two orbit solutions. The longer-period solution appears marginally    Hei1978a
                      preferable.                                                                   
                    - Only elements P and T have been amended from the orbit of             Sta1977a
                      Baize (1959).                                                         Baz1959 
08211+4725  A  1745 - AB (mag. 8.6-12.0, 4") is HU 224, 39" distant. This may be a                  
                      quadruple system, as the proper motions are in fair agreement.                
08267+2432  A  1746 - 24 Cnc. Star A (mag. 7.02, 6", dF1) is physical; A-BC = STF 1224.             
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
08285-0231  A   551 - Quintuple. A and B are SB's with P = 2.5 d and 6 d, respectively              
                      (being studied by F. Fekel).                                                  
                    - Star C (mag. 10.49, 18") is physical; AB-C = STF 1233.                        
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
08286+3502  WOR  19 - Two Couteau (1982) orbit solutions - only #2 now in catalog           Cou1982c
08345-3236  FIN 335 - Giant primary according to isochrone fit.                                     
08391-2240  BU  208 - Newburg finds little evidence for the perturbation suspected by       Nwb1968a
                      Hirst (MNASSA 2, 100, 1943).                                                  
08394-3636  I   314 - Only elements P, T, and a of Heintz (1968) were adjusted for          Hei1968 
                      Starikova (1981) solution. .                                          Sta1981a
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Heintz (1968).                                                        Hei1968a
08433-3908  GC 12009- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
08447-5443  I    10 - Quoted errors in P and a are +14/-11y, +0".03/-0".01, respectively.   Ary2002b
08468+0625  SP    1 + STF1273                                                                       
                    - Epsilon Hya. Quintuple. AB-C triple solution ((AB)-C in HIP).         Sod1999 
                      G0III-IV.                                                                     
                    - The elements for AB are combined visual-spectroscopic.                Hei1963c
                    - A secondary radial velocity variation with a period of about 70d              
                      was suspected by Underhill (Pub. DAO Victoria 12, 161, 1963)          Fin1970b
                    - AB is variable. C is SB1, P = 9.905 d. Star D is in slow direct               
                      motion (mag. 12.72, 19").                                                     
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
08538-4731  FIN 316 - Low incl fixed at 15 deg, Omega=0                                     Sod1999 
                    - High mass-sum and q=1.5(0.3) corroborates secondary 9.1d SB2          Wor1983 
                      The primary is SB2, P = 9.07 d. 1912-13 (Lick Obs. Bul. 16, 137,              
                      1928); no later observations.                                                 
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Finsen (1973).                                                        Fin1973a
08549+2612  A  2131 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
08585+3548  COU1897 - Semi-major axis value of 0".4 in Couteau (1999) appears to have been  Cou1999b
                      a typo. Changed to 0".14 in orbit catalog.                                    
08592+4803  HJ 2477 + HU  628                                                                       
                    - Iota UMa. Quadruple. Star A is a Delta Scuti type variable and SB1,           
                      P = 11.03 yr. BC is currently too close to A to be observed.                  
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
09001-1228  HU  225 - A faint companion (mag. about 14, 5") found by Worley may be                  
                      physical.                                                                     
09006+4147  KUI  37 - Hyad. Well observed RV variation in agreement with the visual orbit.          
                    - AO photometric analysis includes mass determination.                  TtB2000 
09036+4709  A  1585 - Two orbit solutions (Docobo 1987, etc.) Short-period solution         Doc1987a
                      appears preferable.                                                           
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
09063-5904  LTT 3359- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
09104+6708  STF1306 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
09110+6331  tau UMa - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Bretz (1961).                                                         Brz1961 
09123+1500  FIN 347 - Reversed Delta m and slightly larger parallax/smaller masses than in  Msn1996a
                      the speckle-spectroscopic study by Mason et al.(1996).                        
                      Mason solution gives errors for individual elements.                          
                    - A is Pi 1 Cnc.                                                                
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
09144+5241  STF1321 - Both components are suspected SB's (Abt & Levy, AJ 78, 1093, 1973).           
09149+0427  HEI 350 - A long-period astrometric binary, now resolved.                               
09167-0621  KUI  40 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Jones (1928).                                                         Jon1928c
09173-6841  FIN 363 - Speckle observations needed to refine relative orbit.                         
09190+1742  83 Cnc  - photocentric (astrometric) orbit based on combination of ground-      Gon2002 
                      based catalogs with Hipparcos. Errors are given for all elements.             
09228-0950  A  1342 - A magnetic and variable star, KU HYA, 3.41d, 0.05V.                           
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Combined analysis using speckle, radial velocity, various magnetic            
                      field and polarization measurements. Errors given for individual              
                      elements.                                                             Wad2000 
09276-3500  B  2215 - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
09278-0604  B  2530 - Giant primary according to isochrone fit.                             Sod1999 
                    - SB1, P = 2.5 yr. Primary is G2V, so companion should likely be a      Bag1984b
                      cooler dwarf; this seems to be confirmed from magnitude differences           
                      observed at 7500, 5500, and 4500 Angstroms.                                   
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
09285+0903  STF1356 - Omega Leo. Giant primary according to isochrone fit.                          
09307-4028  COP   1 - Psi Vel. Identification of ascending node not quite certain.                  
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
09313-1329  KUI  41 - Ross 440. The primary is a probable flare star.                               
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
09357+3549  HU 1128 - 11 LMi. Companion not seen 1941-1958 (Van Biesbroesk 82-inch).                
                      A is slightly variable, SV LMi, P = 18d, probably due to starspots.           
09379+4554  A  1765 - Incorrectly listed as A 1785 (Erratum noted in Inf. Circ 98, 1986)    Baz1985d
                    - Incorrectly listed as ADS 7547 (Erratum noted in Inf. Circ 98, 1986)  Doc1985d
09407-5759  B   780 - Variable RV. with a range of 40 km/s observed in 1912-13.                     
                    - Speckle observations needed to confirm orbit. Sp subsystem in sec?            
09412+0954  HMM   1 - combined spectroscopic/astrometric solution, using data from the      Hmm2001 
                      Mark III, NPOI, and PTI interferometers.  P = 14.498064 +/- 0.000009          
                      days, T = JD2450629.831 +/- 0.003; errors given for all other                 
                      elements as well.  Eccentricity assumed zero. The authors derive              
                      distance and component masses and luminosities.  		                           
09442-2746  FIN 326 - Theta Ant. Spectrum composite; A8V+F7II-III.                                  
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
09468+7603  Ross 434 - GJ 366 = Ci 20,545                                                           
                    - Alden orbit rejected from Fourth Catalog                              Ald1951 
                      ("not confirmed by subsequent observations")                          Wor1983 
09474+1134  MCA  34 - Orbit includes mass determination.                                    Msn1997a
09513-4612  GC 13574- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
10017+1725  XY Leo  - Elements from Hipparcos Intermediate Astrometric Data combined with           
                      light-travel time analysis of eclipse timings.                        Bks2005 
10093+2020  A  2145 - Composite spectrum binary, classified G2III+A2V by Markowitz                  
                      (1969 Dissertation, Ohio State Univ.), who quotes delta m = 1.1.              
                      It is not known which spectrum belongs to the visual primary.                 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Only elements P and T have been amended from the second orbit of      Sta1977a
                      Baize (1957).                                                         Baz1957a
10106-1222  lam Hya - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Jones (1928).                                                         Jon1928f
10110+7508  KUI  47 - Poorly determined (long) period, only periastron-part covered.                
10120-2836  B   194 - Although Hartkopf et al. (1993) predicted a time of periastron        Hrt1993 
                      around 1989.3, we find the time of periastron to be 2006.2. The               
                      discrepancy may be explained by three measures not published at the           
                      time of the 1993 paper.                                               Sey2002 
10183-0326  RST4454 - Two orbit solutions; neither clearly preferable.                      Hei1997 
10196+1952  Ci 20,574 - GJ 388 = AD Leo                                                             
                    - Reuyl (1943) orbit rejected from Fourth Catalog                       Reu1943 
                      ("not confirmed by subsequent observations")                          Wor1983 
10200+1950  STF1424 - Gamma Leo. Star C is flare star AD Leo = BD +20 2465, 5' distant,     Bag1984b
                      and not related to the pair AB. This companion has been detected              
                      only at 7500 Angstroms, and is expected to have a very low mass.              
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
10223-1032  BD-09 3055                                                                              
                    - SB1. Curvature seen in proper motion components from Hipparcos data,          
                      although period was unknown. Combined spectroscopic/astrometric               
                      solution, based on echelle spectra and Hipparcos intermediate                 
                      data (abscissa residuals).  Torres derives a parallax of 19.5 +/-             
                      1.8 mas (compared to Hipparcos value of 29.4 +/- 2.7 mas). An                 
                      estimated primary mass of 0.73 +/- 0.05 Msunyield a mass of 0.88 +/-          
                      0.05 Msun for the secondary.                                          Trr2006 
10224-2933  GC 14246- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
10227+1521  STT 216 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
10279+3642  HU  879 - Beta LMi. G8III-IV spectrum.  Combined visual-spectroscopic orbit.    Hei1981f
                      Visual observations alone only cover a narrow apastron arc.                   
                    - Only elements P and T have been amended from the orbit of             Sta1977a
                      Baize (1950).                                                         Baz1950b
                    - Orbit contains spectroscopic data.                                    Hei1982e
                    - photocentric (astrometric) orbit based on combination of ground-      Gon2002 
                      based catalogs with Hipparcos. Errors are given for all elements.             
10282-2548  FIN 308 - Star C (mag. 12, 1.4") is in slow direct motion.                              
10287+4558  A  1993 - Derived orbital parallax 0".01274, mass sum 2.01 +/- 0.87 Msun        Lin2004a
10297+8415  GC 14305- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
10361-2641  BU  411 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
10373-4814  SEE 119 - One component is SB, P = 10.21 d. (#623 in Batten et al., 1989 PDAO,          
                      17, 1).According to Evans (1969, MNRAS 142, 523), this is the                 
                      Identification of the ascending node is based on this assumption.             
                      The period adopted for the visual orbit utilizes RV and               Fin1968c
                      interferometric observations.                                                 
                    - See also D.S. Evans (MNRAS 142, 523, 1969) for residuals, ephemeris,          
                      and full discussion of this interesting system.                       Fin1970b
10386-1653  phi3 Hya- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Christie (1936).                                                      CWH1936 
10426+0335  A  2768 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
10430-6424  the Car - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
10468-4925  R   155 - Mu Vel. A is SB                                                               
10534-0215  GC 14969- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin (1980).                                                       Grf1980a
10557+0044  BU 1076 - 55 Leo. F2III classification probably erroneous.                              
                    - If T is reasonably accurate, the RV run of the primary in 1919-30             
                      would fit the visual motion with an ascending node in the third               
                      quadrant.                                                                     
11033+3558  Lal 21185 - GJ 411 = Ci 20,604                                                          
                    - Lippincott (196) orbit rejected from Fourth Catalog                   Lip1960 
                      ("not confirmed by subsequent observations")                          Wor1983 
11035+5432  A  1590 - Combined orbit from visual, spectroscopic, and transit observations.  Hei1963a
11037+6145  BU 1077 - Alpha UMa. Low incl. fixed at 180 deg, observations lacking near      Sod1999 
                      periastron. Giant primary according to isochrone fit.                         
                    - Faint, distant pair at 385", 7.60V. Possible common proper motion             
                      with the SB HD 95638 at 280".                                                 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - photocentric (astrometric) orbit based on combination of ground-      Gon2002 
                      based catalogs with Hipparcos. Errors are given for all elements.             
11047-0413  A   676 - A-BC triple solution. Star A (mag. 7.64, 11", G5) is in slow direct           
                      motion; A-BC = STF 1506.                                                      
                    - Incorrectly listed as STF1514 (erratum noted in Inf. Circ. 93, 1984)  Doc1984b
11053-2718  FIN  47 - Chi 1 Hya. Masses and bolometric magnitudes are derived for the two   Msn1999a
                      components of this system, based on assumed spectral types and                
                      available parallaxes.                                                         
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      van den Bos (1957).                                                   B__1957a
11111+3027  STT 231 - AB Hyperbolic orbit. e = 575.                                         Hop1960b
                      sigma = areal constant in the true orbit = 3.75 arcsec^2/yr                   
                      q = periastron distance in the true orbit = 33".73                            
                    - All hyperbolic orbits rejected from Fourth Catalog                    Wor1983 
11116-1459  LTT 4120- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
11137+2008  STF1517 - Slightly variable.                                                            
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Hopmann orbit rejected from Fourth Catalog                            Hop1970 
                      ("period over 4000 years")                                            Wor1983 
11154-5249  HD 97961- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
11159+1318  MCA  35 - 73 Leo. SB now resolved by speckle interferometry.                            
11182+3132  STF1523 + xi  UMa                                                                       
                    - Xi UMa. Quadruple. Preliminary Keplerian Aa-B 2-orbit model gives     Sod1999 
                      good solution (failure in HIP).                                               
                    - Many-body perturbations observable but not yet studied. Cf. Aa-Bb             
                      analysis in Mason et al. (1995)                                       Msn1995 
                    - Both orbits are visual and spectroscopic. The orbit of the visible            
                      Aa-B pair includes the secular perturbations in inclination, node,            
                      longitude of periastron, and K. Star B is also SB1, P = 3.98 d.               
                    - The short-period pair has been resolved by infrared speckle                   
                      interferometry                                                        Mcy1983 
                    - AO photometric analysis includes mass determination.                  TtB2000 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
11190+1416  STF1527 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
11191+3811  CHR 133 - 55 UMA. Primary is 2.6d SB1 (#669 in Batten et al., 1989 PDAO,                
                      17, 1). Mass-sum in fair agreement with Liu et al. (1997)             Liu1997 
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      McAlister et al. (1993).                                              McA1993 
11210-5429  I   879 - Pi Cen. The spectral lines are very poor; the RV range of 30km/s is           
                      probably mere scatter. A few more speckle obs needed to constrain             
                      the eccentricity.                                                             
11221-2447  I   507 - Variable TV Crt. Tokovinin (1999) gives three possible orbits which           
                      are consistent with visual and IR speckle observations, as well as            
                      radial velocity difference and Hipparcos parallax for stars of this           
                      type (K5V). Inclination is near 90 degrees, but eccentricity is not           
                      high, as predicted by Torres et al. (1995 ApJ, 452, 870).                     
                      Star has large IR excess. A component is SB1 (P=262 days), while B            
                      component is SB2 (P=315 days).                                        Tok1999b
                    - Torres et al. (1995) report radial velocity data and make some                
                      constraints on possible astrometric orbits.                           Trr1995b
                    - See also HST observations and discussion of all components of this            
                      multiple system by Soderblom et al. (ApJ 498, 385, 1998).                     
11230+0408  A  2776 - Star C (mag. 13.5, 6") is physical.                                           
11239+1032  STF1536 - Iota Leo. Star A is a Delta Scuti type variable. A small variation            
                      in the early RV's was not confirmed by fairly numerous subsequent             
                      observations. From the visual separations, Baize (1980) suggests a    Baz1980a
                      subsystem with P = 16 yr.                                                     
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
11268+0301  STF1540 - Hopmann orbit rejected from Fourth Catalog                            Hop1960a
                      ("period over 4000 years")                                            Wor1983 
                    - The C component (mag. 9.9, 90") is also probably physical.            Fin1970b
11308+4117  STT 234 - One component is SB P = 7.40 d, and the lines of all three stars              
                      appear in the spectrum. The close pair is very probably the visual            
                      primary; the ascending node is identified on that assumption.                 
11354-3232  LTT 4290- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
11363+2747  STF1555 - A is an SB.                                                                   
                      Data appear equally well fit by rectilinear solution - see catalog.           
11373-7554  pi Cha  - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
11374+4728  KU   39 - A is a BY Dra-type variable, and also an SB.                                  
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
11379+5037  GC 15947- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin & Griffin (1980).                                             Grf1980c
11387+4507  STF1561 - B is an SB.                                                                   
11446-4925  RST9004 - Originally published as RST3558a and previously listed in the WDS             
                      under duplicate designation RST3558.                                          
11456-6644  lam Mus - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
11480+2013  MKT   7 - 93 Leo.                                                                       
                    - Visual orbit based on astrometry from Mark III interferometer.        MkT1995 
                      Additional spectroscopic data yield component masses, luminosities,           
                      radii, effective temperatures, and distance.                                  
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Hummel et al. (1995).                                                 MkT1995 
11486+1417  BU  603 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
11510-0520  MCA  36 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Ginestet et al. (1985).                                               Gin1985 
11551+0313  HD103501- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
11551+4629  A  1777 - 65 UMa. The primary is the eclipsing binary DN UMa, P = 1.73d.                
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
12009+0637  pi Vir  - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Abt (1965).                                                           AbH1965 
12018-3439  I   215 - The motion is nearly rectilinear, but the sizable proper motion               
                      proves the physical nature.                                                   
                    - The position given by Bespalov is that of HLD 114.                    Bsp1961a
12060+6842  STF3123 - Star C (mag. 15, 3") is probably physical.                                    
12108+3953  STF1606 - STF1606p preliminary orbit calculated to fit perturbations seen to    vdW1974 
                      long-period orbit.                                                            
12118+2319  GC 16657- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin (1985).  Cluster Melotte 111 #AV442.                          Grf1985a
12119+2552  4 Com   - Astrometric solution adopting some elements from the orbits of        HIP1997d
                      Harper (1930) and Harper (1930).                                      Hrp1930a
                      Cluster Melotte 111 #AV448.                                           Hrp1930b
12152-1019  GC 16731- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
12158-2321  BU  920 - Bespalov orbit rejected from Fourth Catalog                           Bsp1961a
                      ("orbit completely faulty and irreparable")                           Wor1983 
                                                                                                    
12160+0538  STF1621 - One component probably has variable RV (Wilson 1967, AJ, 72, 905).            
                    - Indeterminate (long) period, useable a^3/P^2. Poor HIP parallax.      Sod1999 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
12160+4807  HU  736 - Value of Omega inadvertently copied as omega as well.                 Baz1993b
12165+3304  CHR  37 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin (1984).                                                       Grf1984a
12199-0040  MCA  37 - Eta Vir. A spectroscopic and occultation binary now resolved by               
                      speckle interferometry. Observed parallax corroborates closely the            
                      orbital value given by Hartkopf et al. (1992). Primary is 72d SB2     Hrt1992a
                      (#718 in Batten et al., 1989 PDAO, 17, 1B). This is not the SB2               
                      because the observed angular separations are much larger than the             
                      12 mas maximum predicted by Halbwachs (1981 A&AS, 44, 47) from the            
                      spectroscopic elements.  See discussion in Balega et al (1984).       Bag1984b
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
12266-6306  DUN 252 - Alpha Cru.  Hyperbolic orbit.                                         Hop1960b
                      q = periastron distance in the true orbit = 0".916                            
                    - Both A and B appear to be SBs with undetermined periods (see Batten,          
                      Pub. DAO Victoria 13, 249, 1967).                                     Fin1970b
12272+2701  STF1643 - Omega and omega in Hopmann (1964) have been flipped in orbit catalog  Hop1964b
                      to better match observations.                                                 
                      Data appear equally well fit by rectilinear solution - see catalog.           
12306+0943  STF1647 - Hopmann (1964) orbit rejected from Fourth Catalog                     Hop1964b
                      ("period over 4000 years")                                            Wor1983 
12313+5507  GJ 1160 - combined solution of astrometric orbits and DSBs. Paper includes      Are2000 
                      masses, distances, and errors.                                                
12335+0901  REU   1 - Two orbit solutions.                                                  Scz1998b
                    - Masses of 0.143 +/- 0.011 and 0.131 +/- 0.10 Msun are derived                 
                      assuming a trig parallax of 0.233 +/- 0.004 arcsec.                   Trr1999 
                    - Heintz (1972) orbit utilizes elongations of blended photographic              
                      images.                                                               Hei1972 
                    - One or both components may be a flare star.                                   
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
12391+2104  26 Com  - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin (1981).                                                       Grf1981a
12408+4031  LTT13601- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
12417-0127  STF1670 - Gamma Vir. One component is a suspected variable.                             
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
12429+0516  A  1602 - Derived orbital parallax 0".01295, mass sum 2.28 +/- 1.10 Msun        Lin2004a
12439+3421  GC 17317- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
12442+5146  GC 17326- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
12463-6806  R   207 - Beta Mus. The primary has variable RV.                                        
12470-0748  GC 17364- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
12533+2115  STF1687 - 35 Com. The trend in the RV's of star A suggests that the ascending           
                      node is in the third quadrant. Star C (mag. 9.75, 29", G3IV-V) is             
                      physical and in very slow direct motion.                                      
12595+4159  LTT13738- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
13007+5622  BU 1082 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
13023-7133  del Mus - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
13038-0510  GC 17714- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
13100+1732  STF1728 - Alpha Com. Components reversed rel std sol's, e.g. in Hartkopf                
                      et al. (1989).                                                        Hrt1989 
                    - Poor HIP sol.                                                         Sod1999 
                    - Preliminary orbit by Hartkopf et al. for this edge-on pair indicated          
                      that one of the F5V stars may have partially eclipsed the other in            
                      early 1990.                                                                   
                    - Orbit includes errors for individual elements.                        Haf1948 
                    - AO photometric analysis includes mass determination.                  TtB2000 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
13123-5955  SEE 170 - The RV's of 1916 are quite uncertain. There may be a variation, and           
                      it may be related to the visual motion. The A component is also a             
                      Beta Lyrae-type system.                                                       
                    - Star C (mag. 8.4, 1.7") is physical; AB-C = I 424.                            
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
13145-2417  FIN 297 - i corrected from 65.6 to 66.6                                         Ruy1995 
13169-3436  I  1567 - Also listed as SEE 171.                                                       
13169+1701  BU  800 - Hyperbolic orbit.                                                     Hop1960b
                      sigma = areal constant in the true orbit = 0.2700 arcsec^2/yr                 
                      q = periastron distance in the true orbit = 5".0334                           
                    - All hyperbolic orbits rejected from Fourth Catalog                    Wor1983 
13175-0041  FIN 350 - This binary is comprised of a pair of F0V stars of near-zero          Hrt1994 
                      delta m, so there is considerable uncertainty as to whether the               
                      orbit is of short-period/high-eccentricity (P~9yr, e~0.6) or                  
                      long-period/low-eccentricity (P~18yr, e~0.0).  Mass sums (a^3/P^2)            
                      for the two orbits differ by just 2%, insufficient to rule out                
                      either solution on the basis of plausibility. (Later speckle obs              
                      near periastron appeared to favor short-period solution.                      
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
13198+4747  HU  644 - Marginal hints that the unconfirmed speckle 3rd comp (Hartkopf et             
                      al., 1997, CHARA Contr. No. 4, (on-line electronic version)) could            
                      be real. Mass-sum and mass-ratio (Heintz, 1969) clearly requires the  Hei1969c
                      primary to be a closer binary.                                                
                    - Masses and bolometric magnitudes are derived for the two components   Msn1999a
                      of this system, based on assumed spectral types and available                 
                      parallaxes. The Hipparcos parallax appears suspect.                           
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
13203+1746  A  2166 - Omega corrected from 0.0 to 180.0                                     Ruy1995 
13209+4359  GC 18063- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
13218-1845  GC 18075- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
13235+2914  HO  260 - Undetermined (long) period in nearby K-dwarf pair.                            
                    - Baize (1968) elements are provisory. Third body (P of order 30 yr)            
                      is suspected.                                                         Baz1968 
13237-0043  A  2489 - T has been revised to comply with recent quadrant determinations.     Zul1972a
13239+5456  PEA   1 - Zeta UMa or Mizar. Mistakenly given the discoverer designation        Pea1925 
                      'MKT   8' in the WDS, but actually first resolved by Pease in 1925,           
                      six decades before the Mark III interferometer measures. This system          
                      has completed some 1,350 revolutions since its first resolution,              
                      probably a record for any "visual" binary.                                    
                    - The orbit of Aa is combined interferometric-spectroscopic (double-    Rus1927 
                      lined spectrum). A small magnitude difference (which would probably           
                      place the ascending node in the second quadrant) is uncertain.                
                      Star B (mag. 3.96, 15") is physical, and is itself a 175.55d SB1.             
                      This quadruple shares proper motion and parallax with 80 UMa (Alcor,          
                      Mag. 4.0, 12', A5V) and with other members of the Ursa Major stream.          
                    - Visual orbit based on astrometry from Mark III interferometer.        MkT1995 
                      Additional spectroscopic data yield component masses, luminosities,           
                      radii, effective temperatures, and distance.                                  
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
13245+1226  GC 18139- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin (1986).                                                       Grf1986c
13246-0510  66 Vir  - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
13258+4430  A  1609 - Star C (mag. 13, 2") is physical.                                             
13291-6441  GC 18206- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
13328+1649  VYS   6 - Both components are flare stars, VW Com.                                      
13310-3924  SEE 179 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
13347-1313  BU  932 - Only elements P, T, and a have been amended from the orbit of         Sta1980a
                      Heintz (1969).                                                        Hei1969a
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
13375+3618  STF1768 - 25 CVn. A7III spectrum.                                                       
13377-2337  RST2856 - Two orbit solutions bu Heintz (1967); neither is clearly preferable.  Hei1997 
13396+1045  BU  612 - Masses and bolometric magnitudes are derived for the two components   Msn1999a
                      of this system, based on assumed spectral types and available                 
                      parallaxes.                                                                   
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
13461+0507  STF1781 - One component is a W UMa-type eclipsing binary.                               
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
13467-5126  M Cen   - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Jones (1928).                                                         Jon1928d
13473+1727  STT 270 - Tau Boo. A is a Delta Scuti-type variable.                                    
13498+3638  GC 18691- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
13546+1825  eta Boo - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Bertiau (1957).                                                       BFC1957 
                    - Daniel & Burns orbit rejected from Fourth Catalog                     Dni1939 
                      ("amplitude below noise level")                                       Wor1983 
13550-0804  STF1788 - Hopmann's (1970) B and F are interchanged, and his orientational      Hop1970 
                      elements contain additional computing errors.                                 
14020+5713  A  1097 - Star C (mag. 10.40, 28") is optical (Eggen 1963); AB-C = STF 1800.    Egg1963 
14035+1047  GC 18985- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Kamper (1987).                                                        Kpr1987a
                    - combined astrometric/spectroscopic solution, including errors                 
                      for individual elements.                                              Kpr1987a
14038-6022  RBT   1 - Primary of bet Cen. Interferometric data from SUSI are combined       Dvs2005 
                      with spectroscopic data to yield orbital parameters, masses, and              
                      distance.                                                                     
14044+6423  alp Dra - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Elst & Nelles (1983).                                                 Est1983 
14087+3341  HU  742 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
14088+7733  BNU   9 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Scarfe (1971).                                                        Scf1971 
14104+2506  12 Boo  - d Boo. SB2. Combined spectroscopic/interferometric solution,          Bod2000 
                      including elemental errors, mass determinations, and other analysis.          
                      P = 9.604565d, T (MJD) = 51237.779                                            
                    - Orbital period published in days (9.6045492 +- 7.6e-6), but here              
                      converted to hours to allow full precision in available column width.         
                      Combined astrometric/spectroscopic solution, including interferometry         
                      data from PTI and NPOI. Derive orbital parallax of 27.74 +- 0.05 mas,         
                      luminosities 7.76 +- 0.35 and 4.69 +- 0.74 Lsun, and masses 1.4160 +-         
                      0.0049 and 1.3740 +- 0.0045 Msun, as well as effective temperatures,          
                      radii, and other physical parameters.                                 Bod2005a
14110+3152  GC 19140- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
14122+4411  STT 278 - Only elements P and T have been amended from the orbit of             Sta1980a
                      Heintz (1976).                                                        Hei1976 
14131+5520  STF1820 - Two possible solutions, based on 26-year long series of photographic          
                      data from Pulkovo.                                                            
                      A component is SB1 (P=2.87 yr, e=0.75). Spectral types and                    
                      magnitudes are estimated for all components of this triple system.    Kiy1998 
14153+0308  STF1819 - Hopmann (1945) orbit is not seen but is quoted from Baize's           Hop1945 
                      catalog.                                                              Baz1950a
14158+1018  A  1101 - Two orbit solutions; neither is clearly preferable from residuals     Baz1984a
                      alone. Consistent magnitude difference estimates support short-               
                      period solution, however.                                                     
                    - Star C (mag. 9.75, 4") is physical; AB-C = STF 1823.                          
14180+3531  A Boo   - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Scarfe & Alers (1975).                                                Scf1975 
14234+0827  BU 1111 - A-BC triple solution (double A-(BC) in HIP). A-BC = STF 1835.         Sod1999 
                    - Star A (mag. 5.12, 6", A0V) is physical; its RV may be variable.              
14260+4213  COU1757 - Elements determined by Mante (1998) were also published by the same   Mnt1998b
                      author in Obs. Trav. SAF 52, 44, 2000.                                        
14267+1625  A  2069 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
14294+8049  GC 19630- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
14310-0548  RST4529 - Two orbit solutions, but long-period, circular orbit ruled out by     Hei1981a
                      speckle obs.                                                                  
14323+2641  A   570 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
14330+0340  HD127742- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
14370-1218  GC 19695- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
14390+6417  KON   1 - Konig et al. calculate a combined speckle/spectroscopic solution      Kon2005 
                      and derive masses of 0.9 +/- 0.1 and 0.5 +/- 0.1 Msun for the                 
                      primary and secondary, respectively. The primary is the active young          
                      variable EK Dra.                                                              
14396-6050  RHD   1 - Alpha Cen. The secular changes of a, i, node, and longitude of                
                      periastron have been allowed for; quoted elements are for 2000.0.             
                      The semi-major axis has been revised (Observatory, 102, 42, 1982).            
                    - The third member of the system is Proxima Centauri = V 645 Cen        Hei1982a
                      (mag. 10.7, 2.2 degrees distant, M5Ve), a flare star. See Kamper &            
                      Wesselink (1978, AJ 83, 1653).                                                
                    - Difficult for Hipparcos with secondary (= HIP 71681) at edge of       Sod1999 
                      the sensitivity profile. Present parallax preferable to HIP value.            
                      Mass-ratio from Kamper & Wesselink.                                           
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000b
                      and component masses.                                                         
                    - combined spectroscopic/astrometric solution, yielding masses and      Pbx2002 
                      orbital parallax.                                                             
14404+2159  MCA  40 - A spectroscopic triple system, with periods 101.6 and 3320 days.      Bag1984a
                    - Barlow & Scarfe (1991) give combined spectroscopic/speckle            Scf1991 
                      interferometric solution and include errors for individual elements.          
                    - Orbit includes errors for individual elements.                        Bag1989b
14411+1344  STF1865 - AO photometric analysis includes mass determination.                  TtB2000 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
14426+1929  HU  575 - Identification of the ascending node, based on a few Mt. Wilson               
                      spectra, is uncertain at this small difference in magnitude.          Mlr1952b
                    - C component LDS 968 = BD+20 3009 (mag. 10.1, 135") has common proper  Kam1960 
                      motion.                                                                       
14455+4223  STT 285 - A faint star (mag. 12.46, 50") has common proper motion               Maa1938 
14463+0939  STF1879 - Mason et al (1999) period should be 243, not 253 yrs (Alzner,         Msn1999 
                      private comm.)                                                                
                    - Mason orbit includes errors for individual elements.                          
14489+0557  STF1883 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
14492+1013  A  2983 - Two orbit solutions. Long-period solution later ruled out by          Egg1967 
                      speckle observations.                                                         
14514+1906  STF1888 - Xi Boo. Three orbit solutions, including errors for individual                
                      elements. Only orbit #3 is now in the catalog.                        Wln1962 
                    - The RV difference is small and renders identification of the                  
                      ascending node uncertain.                                                     
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
14534+1909  GC 20037- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Beavers & Salzer (1983).                                              Bvr1983 
14545+1606  MEL   2 - GJ 569 Ba,Bb. Paper also includes spectroscopic information and               
                      discussion of spectral type, masses, evolutionary state, etc.         Lne2001 
                    - Combined spectroscopic/astrometric solution, yielding masses                  
                      0.071 +/- 0.011 and 0.054 +/- 0.011 Msun.                             Oso2004b
14565-3438  I   227 - Star C (approx. mag. 14, 6") is probably physical.                            
14575-2125  H N  28 - Hipparcos triple solution together with A (= HIP 73184). P,T,e,               
                      omega, and q fixed from Duquennoy & Mayor (1988 A&A, 200, 135),       Mar1990 
                      cf orbit in Mariotti et al. (1989).  Poor HIP-sol.                    Sod1999 
                    - B is a SB, P = 308d.                                                          
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Strand (1943) suspects a perturbation with P = 2.2y, a = 0".020,      Str1943 
                      and Omega = 30 deg.                                                           
14575-2125  H N  28 - AB. Hyperbolic orbit.                                                 Hop1967 
                      sigma = areal constant in the true orbit = 2.540 arcsec^2/yr                  
                      q = periastron distance in the true orbit = 20".388                           
                    - All hyperbolic orbits rejected from Fourth Catalog                    Wor1983 
14575-2125  H N  28 - BC. Combined solution (spectroscopic + visual + parallax) for this            
                      low-mass interferometric SB2. P = 308.884 +/- 0.004 days,                     
                      T0 = JD2450270.220 +/- 0.011. Errors for other elements are also              
                      given. Accurate masses are determined for these M dwarfs, as well as          
                      J, H, K, and L magnitudes.                                            Frv1999 
14576+6556  RR UMi  - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Batten & Fletcher (1986).                                             Bte1986 
14587-2739  BU  239 - 59 Hya. Mourao (1972) elements yield a total mass of 13.65 Msun,      Mro1972 
                      which seems too large for a pair of A5 stars.                         BLM1978 
14598-2201  Ci 18,1988 - Alden (1938) orbit rejected from Fourth Catalog                    Ald1938b
                      ("not confirmed by subsequent observations")                          Wor1983 
15014+6012  GC 20233- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
15035-4035  I  1262 - Ruymaekers & Nys (1995) noted discrepancies in the orbit of Erceg &   Ruy1995 
                      Olevic (1986), and calculated elements from the Thiele-Innes          Erc1986 
                      elements originally given.                                                    
15038+4739  STF1909 - 44 Boo. Star B is W UMa-type eclipsing SB2; P = 0.2678 d (Popper      Ppp1943 
                      1943; Binnendijk 1955, AJ 60, 355, 1955). The RV of pair B differs            
                      by +30 km/s from that of star A, much more than the visual motion             
                      can effect, and thus does not represent the true mass-center                  
                      velocity of B. The eclipsing period undergoes intrinsic changes               
                      considerably larger than a lighttime effect in the orbit AB.                  
                      Attempts to identify the ascending node are thus unreliable: Time             
                      shifts of light minima suggest the first quadrant (Plaut), the RV             
                      difference the third quadrant (Heintz). The close approach in the             
                      visual orbit in recent years has prevented continued study of the             
                      eclipsing system.                                                             
                    - AO photometric analysis includes mass determination.                  TtB2000 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
15049-1835  LTT 6010- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
15088-4517  SEE 219 - Lambda Lup. Probably a spectroscopic subsystem, as the RV of the              
                      combined light shows a range of 50 km/s.                                      
15122-1948  B  2351 - Iota 1 Lib. Double-lined spectrum, frequently blended. The second             
                      spectrum may belong, not to the visual companion, but to a third              
                      star, since the RV variation - if real - is faster and larger than            
                      the visual orbit with its low inclination could cause. The pair               
                      BC = BU 618 (mag. 9.82, 1.9") is 58" from the bright pair and                 
                      physical, so that the system is probably quintuple.                           
                    - This system has crude Delta m estimates from lunar occultation of             
                      about 1.3 magnitudes in both red and blue.                            OCC1979e
                    - Masses and bolometric magnitudes are derived for the two components           
                      of this system, based on assumed spectral types and available                 
                      parallaxes.                                                           Msn1999a
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
15136+3453  HO   60 - Misidentified as HO 50 (erratum in Inf. Circ 121, 1994).              Baz1993b
15160-0454  STF3091 - One component is probably variable; position angles have been                 
                      reversed repeatedly.                                                          
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
15183+2650  STF1932 - A subsystem of 30 to 50 yr period, formerly suspected from visual             
                      data, is not supported by the more recent observations.                       
                    - AO photometric analysis includes mass determination.                  TtB2000 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
15232+3017  STF1937 - Eta CrB. Masses and bolometric magnitudes are derived for the two             
                      components of this system, based on assumed spectral types and                
                      available parallaxes.                                                 Msn1999a
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - AO photometric analysis includes mass determination.                  TtB2000 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
15242-1019  eps Lib - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Jones (1931).                                                         JoR1931 
15243+6033  GC 20737- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
15245+3723  CHR 181 + STF1938                                                                       
                    - Star A (Mu 1 Boo, mag. 4.32, 108", F0V) is physical and is an SB,             
                      P = 298.75 d. More speckle-obs needed to confirm preliminary orbit            
                      of Aa.                                                                        
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
15252-4659  RST 767 - Two orbit solutions; shorter-period solution is slightly preferable.  Csa1975c
15255+4557  GC 20750- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
15273+0942  A  1120 - Only elements P, T, and a have been amended from the orbit of         Sta1978c
                      Muller (1955).                                                        Mlr1955a
15273+1738  A  2074 - Only elements P and T have been amended from the orbit of             Sta19840
                      Baize (1976).                                                         Baz1976 
15278+2906  JEF   1 - Beta CrB. The speckle-observations and derived masses leave no                
                      room for a conjectured third component, cf. Kamper et al. (1990).     Kpr1990 
                    - Alpha CVn-type variable.                                                      
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Kamper et al. (1990).                                                 Kpr1990 
15282+0251  A  2175 - Couteau assumption of a double occultation in 1936, giving a period   Cou1957b
                      of 34yr, is probably no loinger tenable                               Fin1970b
15301-0752  G 152-31- Astrometric orbit, but true relative semimajor axis of 0".071 is      Hrr1988 
                      calculated.                                                                   
15317+0053  GC 20867- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
15318+4054  A  1634 - Nu 2 Boo. Omega for Baize (1985) solution corrected from 47.5 to      Baz1985b
                      227.5 degrees.                                                        Ruy1995 
15332-2429  SEE 238 - Star A (mag. 7.00, 9", A3) is physical; A-BC = S 673.                         
15347+2643  alp CrB - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Tomkin & Popper (1986).                                               Tom1986 
15348+1032  STF1954 - Delta Ser. Star A is a Delta Scuti type variable. A very faint pair           
                      CD (mag. about 14 estimated by Burnham, 4") is 65" distant and may            
                      be physical.                                                                  
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
15351-4110  HJ 4786 - Gamma Lup. Variable RV. Heintz (1956) reports that this orbit is      Hei1956b
                      not well known.                                                       BLM1978 
15360+3948  STT 298 - Star C (mag. 7.62, 122", K0) is physical.                                     
15370+6426  HU 1168 - Only elements P and T have been amended from the orbit of             Sta1980a
                      Heintz (1976).                                                        Hei1976 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
15382+3615  HU 1167AB + STF1964CD                                                                   
                    - Masses and effective temperatures are determined for these four               
                      components of ADS 9731, based on dynamical parallax (assuming both            
                      pairs are at the same distance) and derived blackbody curves.         Dru1995 
15402-5655  GC 21035- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
15403+4351  GC 21088- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
15416+1940  HU  580 - Iota Ser. van den Bos considered the long-period solution ruled out           
                      by interferometric observations of 1965; however, later speckle               
                      observations appear to have ruled out the short-period solution               
                      instead. The centers of the broad, blended spectral lines of the              
                      visual pair show a fast variation (range about 65 km/s), and a weak           
                      redshifted component has been seen occasionally. The system is thus           
                      triple.                                                                       
15420+0027  A  2176 - One component is SB1, P = 10.9 d.                                             
                    - Only elements P, T, and a have been amended from the orbit of         Sta1978c
                      Couteau (1960).                                                       Cou1960c
15427+2618  STF1967 - Gamma CrB. The primary is listed as a Delta Scuti type variable. The          
                      RV does not show a variation. A few discordant measurements seem to           
                      have been caused by scatter from the poor lines, and the double               
                      lines reported from three old Yerkes plates were also found probably          
                      spurious on remeasurement.                                                    
                    - AO photometric analysis includes mass determination.                  TtB2000 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
15500-4855  GC 21252- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
15521+1052  BAG   7 - Combined spectroscopic/astrometric solution.                          Tok2000b
15527+4227  chi Her - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
15542+1659  A  2080 - Recent observations render the quadrant reversal assumed by Baize     Baz1956 
                      (1956) very unlikely.                                                         
16003-2237  LAB   3 - Delta Sco. A spectroscopic triple and occultation quadruple. van              
                      Hoof et al. (1963 ApJ, 137, 824) report one component is 20-day SB1.  Lab1974 
                    - Companion discovered by intensity interferometry (Hanbury Brown et            
                      al. 1974)                                                             HBr1974 
                    - Delta m in the visible is about 2.                                    Bag1984b
16010+3318  rho CrB - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
                    - Astrometric orbit found be combining Hipparcos and Multichannel               
                      Astrometric Photometer data with spectroscopic elements of Noyes              
                      et al. (1997 ApJ 483, L111). An alternate solution for this                   
                      proposed planetary system.                                            Gat2001a
16035-5747  SEE 258 - Iota 1 Nor. AB-C triple solution (AB in HIP).                         Sod1999 
16044-1122  STF1998 - Xi Sco. Quintuple. AB-C triple solution. (Failed HIP solution                 
                      because of bad pointing with C-comp at IFOV edge).                    Sod1999 
                    - Star C (mag. 7.30, 7", G1V) is in retrograde motion, and ADS 9910             
                      (mags. 7.4-8.0, 11", dG6) is 281" distant and shares proper motion.           
                    - Masses and bolometric magnitudes are derived for the two components           
                      of this system, based on assumed spectral types and available                 
                      parallaxes.                                                           Msn1999a
16054-1948  bet Sco + BU  947 AB + MCA 42 CE                                                        
                    - Orbits for two component pairs AB and CE of this complex star system          
                      were calculated independently of one another. A complex, multi-body           
                      solution was not attempted.                                           Sey2002 
                    - Combined spectroscopic/astrometric solution for bet Sco, using lunar          
                      occultation data. Reference derives masses, radii, and distance.      Hol1997 
16057-2027  GJ 610  - combined solution of astrometric orbits and DSBs. Paper includes      Are2000 
                      masses, distances, and errors.                                                
16057-0617  FIN 384 - An SB resolved by interferometry.                                             
16066-3648  the Lup - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
16088+4456  phi Her - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Aikman (1976).                                                        Aik1976 
16133+1332  STF2021 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Hopmann (1964) orbit rejected from Fourth Catalog                     Hop1964b
                      ("period over 4000 years")                                            Wor1983 
16137+4638  A  1642 - The quadrant reversal assumed in Dommanget (1970) orbit did not take  Dom1970 
                      place.                                                                        
                    - The pair is suspected of variability.                                         
16147+3352  STF2032 + sig CrB                                                                       
                    - Sigma CrB. Star A is a Delta Scuti-type variable, TZ CrB, and SB2,            
                      P = 1.14 d. It exhibits atmospheric and coronal activity, and radio           
                      flares. A distant star (L 1490-24, mag. about 12.5, 13') has common           
                      proper motion                                                         Kam1939b
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
16147+3352  STF2032 - AB. Parabolic orbit.                                                  Zag1936 
                      sigma = areal constant in the true orbit = 0.1226 arcsec^2/yr                 
                      q = periastron distance in the true orbit = 2".221                            
16219+1327  GC 22009- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin (1978).                                                       Grf1978 
16224-3220  JSP 691 - Poorly determined period, needs many decades yet.                             
16241+4822  HEN   1 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Marcy & Moore (1989).                                                 Mrc1989 
16253-4909  COO 197 - Star C (mag. 12, 16") is optical.                                             
16254+3724  CHR  55 - 25 Her. A component is a shell star. Strong a/e-correlation, more             
                      speckle observations are needed.                                      McA1993 
16286+4153  bet Her - P, T, and e adopted from 1908 spectroscopic orbit.                    MkT1992e
16294-2626  GNT   1 - Alpha Sco. The primary is variable: irregular or semiregular with a           
                      trace of a 5.8 yr period. Composite spectrum; M1.5Iab-Ib+B4Ve.                
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Parabolic orbit.                                                      Hop1957b
                      sigma = areal constant in the true orbit = 0.04448 arcsec^2/yr                
                      q = periastron distance in the true orbit = 2".2055                           
16302+2129  BLA   4 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Plummer (1908).                                                       Plu1908 
16309+0159  STF2055 - Lambda Oph. RV possibly variable. A companion (mag. 10.7, 120") has           
                      common proper motion                                                  Wor1967a
                    - AO photometric analysis includes mass determination.                  TtB2000 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
16318-0216  A   693 - Only elements P, T, and a have been amended from the orbit of         Sta1978c
                      Heintz (1963).                                                        Hei1963a
16329+0315  GC 22255- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Johnson & Mayor (1986). The use of the orbital elements derived by    Jhn1986 
                      Latham et al. (1992) produces a poorer fit.                           Lat1992 
16341+4226  LAB   4 - Sigma Her. Double-lined spectrum.                                             
                    - Orbit includes errors for individual elements.                        Bag1989b
16366+6948  BU  953 - Star D (BD +70 888, mag. 7.99, 146") is physical.                             
16413+3136  STF2084 - Zeta Her. Berman has discussed the RV's (PASP 53, 22, 1941).                  
                    - A subsystem with a period of about 12 yr has repeatedly been                  
                      suspected (cf Baize 1976), and the third component has now been       Baz1976 
                      detected by infrared speckle interferometry.                          Mcy1983 
                    - No evidence in the speckle or Hipparcos data for the large-ampl               
                      third-body orbit given by Baize.                                              
                    - Giant primary according to isochrone fit.                             Sod1999 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
16416+3053  GC 22471- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
16419-1955  GC 22453- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
16453+5647  MCA  44 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Abt (1965).                                                           AbH1965 
16492+4559  A  1866 - 52 Her. Star A (mag. 4.9, A3p) = 52 Her, an Alpha CVn type variable.          
                      BC are in slow direct motion about A at 1.8" separation. A-BC =               
                      BU 627. The magnitudes of B and C are quite uncertain. The physical           
                      nature of the faint and more distant components D and E is unknown.           
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
16518+2840  STF2107 - The faint star C (83") may be physical.                                       
16555-0820  KUI  75 - Wolf 630. A flare star, V1054 Oph. The radial velocities indicate             
                      a third component. The pair is the large proper-motion star Wolf 630          
                      which forms a multiple system with the SB Wolf 629 (mag.11.7, 72",            
                      sdM4) and VBS 8 (mag. about 18, 221"). There is strong evidence that          
                      VBS 8 is an astrometric binary. Eggen suggests that the group is              
                      part of a large moving cluster. He has observed an UV flare on                
                      Wolf 630 (Observatory 85, 161, 1965). According to Soderhjelm (1999)          
                      the mass ratio and mass sum requires the secondary to be a closer             
                      SB. Unuseable HIP solution.                                           Sod1999 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Combined solution from astrometry, spectroscopy, and parallax.                
                      Solution includes errors and yields mass and orbital parallax                 
                      determination.                                                        Sgr2000 
16560+6508  19 Dra  - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Abt & Levy (1976).                                                    AbH1976 
16564+6502  STF2118 - 20 Dra. RV not variable. Some observations belonging to the                   
                      neighboring SB 19 Dra have been published under 20 Dra.                       
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
16566+5711  A  1143 - CD = BD +57 1717 (0.8") is 97" from AB and not associated with it             
                      as the proper motions differ.                                                 
16589-3737  SEE 315 - Also known as B 885. See's observation in 1897 is dubious.                    
17048+4848  GC 23071- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin (1991).                                                       Grf1991 
17053+5428  STF2130 - Mu Dra. Small motions with 3 or 6 yr periods in one of the                    
                      components have  been suspected, but from the positional and RV               
                      observations Heintz finds no evidence for them, and points out that           
                      the O-C residuals  would be increased by the hypothetical body.               
                      Star C (mag. 13, 13.4" from the center of AB) is in slow retrograde           
                      motion; AB-C = BU 1088. Cf. Heintz (1966).                            Hei1966 
17080+3556  HU 1176 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Hartkopf et al. (1989).                                               Hrt1989 
                    - Van de Kamp & Moore point out that Eggen's orbit yields a mass sum    Egg1945 
                      of 52.5, 'an impossible figure'.                                      Kam1966 
17082-0105  A  1145 - The primary is an SB; the observed RV range is 55 km/s.                       
17104-1544  BU 1118 - Eta Oph. Difficult a/e correlation, needs 20 more years of speckle            
                      observations.                                                         Sod1999 
                    - AO photometric analysis includes mass determination.                  TtB2000 
17119-0151  LPM 629 - Poor HIP solution.                                                    Sod1999 
17121+4540  KUI  79 - Poor HIP solution.                                                    Sod1999 
17125+6918  GC 23290- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
17146+1423  STF2140 - Alpha Her. Star A is an irregular variable, and B is an SB1,                  
                      P = 51.58 d. Spectrum composite; G5III+F2V. Radial velocity measures          
                      by Smith (1988 private communication) for Alpha Her A since 1984              
                      have shown an increase in velocity by about 11 km/sec during a                
                      three-year interval, then an apparent turnover in velocity during             
                      the fourth year. This suggests a component with a period of the               
                      order of a decade; it now appears that this system may have at least          
                      5 physical components. Two faint stars at 20" and 80" are optical.            
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
17153-2636  SHJ 243 - 36 Oph.  Three orbit solutions, including errors for individual               
                      elements; the shortest-period orbit is marginally preferable.         Irw1996 
                    - A may be an SB.                                                               
                    - C component CD-26 12036 (mag. 6.34, 700", K5V) has common proper              
                      motion.                                                                       
17156-3836  FIN 355 - New orbit based on few observations, mass-sum too small.              Sod1999 
17190-3459  MLO   4 - Good double-solution instead of unuseable HIP-data.                   Sod1999 
                    - Identification of ascending node is probable. Spectrum composite;             
                      K3V+K5V. Star C (mag. 10, 31") is physical; AB-C = HJ 4935.           Hir1943c
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
17191-4638  BSO  13 - Four orbit solutions, including errors for individual elements;       Win1962 
                      only orbit #4 is now in the catalog.                                          
17213-5107  HD156643- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
17217+3958  MCA  47 - Period fixed from spectroscopic orbit. Visual secondary is 2.2d ecl           
                      bin (V819 Her). Mass-sum in agreement with Scarfe et al. (1994).      Sod1999 
                    - Combined spectroscopic/speckle solution, yielding distance, masses,           
                      etc.                                                                  Scf1992 
17226-3555  GC 23463- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
17236+4256  HD157821- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
17240-0921  RST3972 - High mass-sum, sp duplicity?                                          Sod1999 
17263+0736  GC 23614- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      McLaughlin (1962).                                                    MLa1962 
17266-0505  HR 6493 - Preliminary elements, based on Mark III interferometric results.      MkT1997 
17304-0104  STF2173 - The eccentricity, inclination, node, and longitude of the node are            
                      taken from the orbit of Duncombe & Ashbrook (AJ 57, 92, 1952).        WRH1976b
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
17306+1731  GC 23718- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
17311-6041  del Ara - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
17314+0243  A  2386 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Lucke & Mayor (1982).                                                 Luk1982 
17315-6026  I   600 - Ruymaekers & Nys (1995) noted discrepancies in the orbit of Erceg &   Ruy1995 
                      Olevic (1988), and calculated elements from the Thiele-Innes          Erc1988 
                      elements originally given.                                                    
17349+1234  MCY   4 - The companion has recently been detected by infrared speckle                  
                      interferometry.                                                       Mcy1983 
                    - combined astrometric/spectroscopic solution.                          Kpr1989 
                    - Gatewood derives a weighted mean parallax of 68.12 +/- 0.75 mas from          
                      MAP and previous results. Masses resulting from solution are 2.842            
                      +/- 0.194 and 0.778 +/- 0.058 Msun; spectral types are A2V and K2V.   Gat2005 
17350+6153  BU  962 - 26 Dra. A distant companion (mag. 9.95, 740") shares the large                
                      proper motion (AJ 67, 539, 1962).                                             
17364+6820  CHR  62 - Ci 18,2354 = GJ 687                                                           
                    - Lippincott orbit rejected from Fourth Catalog                         Lip1967 
                      ("object still suspected to be binary by some, but no even            Wor1983 
                      approximately reliable or complete elements yet available")                   
17372+2754  KUI  83 - AB-C triple solution.                                                 Sod1999 
                    - Star C (mag. 11.8, 9") is physical.                                           
                    - Masses and bolometric magnitudes are derived for the two components           
                      of this system, based on assumed spectral types and available                 
                      parallaxes.                                                           Msn1999a
17379+1836  Ci 18,2347 - GJ 686                                                                     
                    - Bieger orbit rejected from Fourth Catalog                             Bie1964 
                      ("not confirmed by subsequent observations")                          Wor1983 
17390+1320  GC 23923- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
17393+0333  GC 23929- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
17419+7209  STF2241 - A family of possible orbital solutions are determined, with periods   Rmn1994 
                      ranging from 5,200 to 120,000 years, using the method of apparent             
                      motion parameters and incorporating parallax and radial velocity              
                      information.                                                                  
17457-2900  Sgr A*  - Semimajor axis in mpc was converted to arcseconds based on a quoted   Eck2002 
                      distance of 8 kpc.  Errors for Eck2002 orbits are as follows:         Sel2002 
                                                                                            Ghe2003 
                                                                                            Sel2003 
                      Element       Sgr A* - S1       Sgr A* - S2          Sgr A* - S8              
                      ----------------------------------------------------------------------        
                      P (yr)        100. +184/-54     19.4   +7.4/-3.0     57.   +1060/-0           
                      a (mpc)       18.  +18./-8.     5.6    +0.7/-1.1     10.   +48./-0.           
                      a (arcsec)    0.46 +0.46/-0.21  0.14   +0.02/-0.03   0.26  +1.24/-0.00        
                      i (deg)       60.  +/-5.        70.    +6./-17.      0.    +/-70.             
                      Omega (deg)   -14. +7./-12.     23.    +27./-11.     -65.:                    
                      T (by)        2097 +281/-96     2002.6 +6.8/-22.     2043  +1060/-0           
                      e             0.6  +/-0.3       0.8    +0.15/-0.40   0.95  +0./-0.12          
                      omega (deg)   190. +120/-10     190.   +/-10.        -55.  +32/-0             
17465+2743  STF2220 + AC    7                                                                       
                    - Star A = Mu Her (mag. 3.42, 36", G5IV) is physical, and is a                  
                      large-amplitude astrometric binary; A-BC = STF 2220.                          
17471+1742  STF2215 - An SB.                                                                        
17530-0755  STF3128 - Semi-major axis incorrectly given as 0.935; should be 0.985           Pop1989b
                      (erratum noted in Inf. Circ. 108, 1989)                                       
17530+8354  STT 349 - Heintz (1978) suspects the presence of an unresolved star.            Hei1978d
17542+1108  FIN 381 - Primary is 0.80d W UMa ecl. bin (V 2388 Oph). Called a SB in the              
                      Bright Star Catalogue; this may be motion in the visual pair.                 
                    - Orbit includes errors for individual elements.                        Bag1989b
17569+0610  HD163642- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
17572+2400  MCA  50 - astrometric binary, probable period 940 days                          Bag1984a
                    - Culver et al. (1980 BAAS 12, 250) report this to be an SB with a      Bla1987 
                      period of 2.6 years.                                                          
                    - combined spectroscopic/interferometric solution                       Hrt1994 
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      McAlister et al. (1995).                                              McA1995 
17573+1238  HD163750- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
17578+0442  GJ 699  - Ci 20,1069 = Barnard's Star                                                   
                    - van de Kamp orbits rejected from Fourth Catalog                       Kam1969c
                      ("object still suspected to be binary by some, but no even            Wor1983 
                      approximately reliable or complete elements yet available")                   
17584+0428  KUI  84 - P, T, and e have been taken from the astrometric solution. In the             
                      same field with Barnard's Star. Two astrometric mass-ratio                    
                      determinations showed B to be twice as massive as A. This has now             
                      been confirmed by Tokovinin, who finds B to be a SB, P = 34.5d.       Gat1973 
18002+8000  BAG   6 - 41 Dra. Elements P, T, and e adopted from spectroscopic orbit of              
                      Tokovinin (1995 AZh 21, 286)                                          Bag1997a
                    - Combined spectroscopic/speckle solution, deriving masses (1.28 +/-            
                      0.15, 1.20 +/- 0.14 Msun) and orbital parallax (23.0 +/- 2.2 mas).            
                      Authors note earlier elements and discuss possibility of orbital              
                      evolution.                                                            Tok2003 
18018+0118  BU 1125 - 68 Oph. An SB.                                                                
18025+4414  BU 1127 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
18031-0811  STF2262 - Tau Oph. RV of the primary may be variable.                           Wrz1959 
                    - Primary giant according to isochrone fit.                             Sod1999 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
18034+0825  GC 24579- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
18055+0230  STF2272 - 70 Oph. The existence of a third body, for which orbits have been             
                      computed, is now generally discounted as the strong photographic              
                      coverage fails to show any such variation. Batten & van Dessel                
                      (1976, Pub. Dom. Astrophys. Obs. 14, 345) discuss the radial                  
                      velocities.                                                                   
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
18058+2127  STT 341 - Triple solution with C (HIP 88639). Primary is 0.88d RS CVn-type              
                      variable or ecl. bin (V772 Her).                                      Sod1999 
                    - Combined visual-spectroscopic orbit; the lines were separated at              
                      periastron passage. Star A is an eclipsing SB1, P = 0.88 d.                   
                      (Batten et al. 1979, PASP 91, 304). Star C (mag. 10.62, 28") is               
                      physical.                                                             Hei1982b
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Orbit contains spectroscopic data.                                    Hei1982e
18066+4616  HD166067- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
18068+0853  GC 24683- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
18068-4325  HJ 5014 - Quoted errors in P and a are +170/-97y, +0".66/-0".41, respectively.  Ary2002b
18070+3034  AC   15 - 99 Her. Identification of the ascending node is not very certain.     Hei1972 
18092-2211  RST3157 - Poor fit for visual observations, speckle needed.                             
                    - Poor HIP sol.                                                         Sod1999 
18096+0400  STF2281 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
18101+1629  STF2289 - The positional elements - not given by Hopmann - were reconstructed   Hop1964b
                      from his ephemeris.                                                           
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
18118+3327  B  2545 - Called a SB, but variation is undoubtedly due to motion in the                
                      visual orbit.                                                                 
                    - Hartkopf et al. (1989) give two possible orbit solutions with errors          
                      for individual elements; there is no clear preference between the             
                      long- and short-period orbits.                                        Hrt1989 
18146+0011  STF2294 - Two orbit solutions by Luyten (1934) - only #2 now in catalog         Luy1934 
18159-4412  GC 24892- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
18178+4351  A   578 - Star C (mag. 13.4, 2") is probably physical.                                  
18197-4542  CHR 148 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Bopp et al. (1970).                                                   Bop1970 
18208+7120  STT 353 - Phi Dra. Almost rectilinear relative motion, long period!             Ole1975b
                    - Star A is SB1, probable P = 27 d, also an Alpha CVn type variable.            
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
18211+7244  LAB   5 - Chi Dra. P,e fixed from spectroscopy. Orbit includes errors for               
                      individual elements.                                                  Tom1987 
                    - Speckle and spectroscopic orbit, P = 280.531 d. Positional elements           
                      disagree somewhat with those of the astrometric orbit (prior to               
                      to resolution of the companion) by Breakiron & Gatewood (1974).       BrG1974 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Discussion of the RV's by J. Vinter Hansen (Lick Obs. Bul. 19, 141,           
                      1942).                                                                        
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Tomkin et al. (1987).                                                         
                    - P, T, and e were taken from spectroscopic orbit                       Ald1936c
18232-6130  GLE   2 - Dynamical elements for Alden's orbit were obtained from a             Ald1946 
                      spectroscopic orbit. Alden's orbit was rejected from the Fourth               
                      Catalog ("amplitude below noise level")                               Wor1983 
18250-0135  AC   11 - Spectrum composite; A9III+F6III.                                              
18250+2724  STF2315 - The RV of the primary is probably variable.                                   
18253+4846  HU   66 - Van Biesbroeck (1954) was unable to resolve this system in 1943,              
                      1944 or 1945 on the 82-inch telescope at the McDonald Observatory.            
                      However, since he resolved the system successfully in 1946 with the           
                      same telescope, and in 1940 with a smaller (40-inch) telescope, the           
                      non-resolution is probably due to bad seeing or ID error.             Sey2002 
18299+2639  HD170737- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin (1980).                                                       Grf1980b
18339+5144  BY Dra  - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
                    - Combined spectroscopic/astrometric (Palomar Testbed Interferometer)           
                      solution, including determination of distance, masses, luminosities,          
                      etc.                                                                  Bod2001 
18339+5221  A  1377 - Star C (mag. 8.81, 26", F0) is physical; AB-C = STF 2348.                     
18355+2336  STT 359 - Spectrum composite; G9III+G7III.                                              
18359+1659  STT 358 - Identification of the ascending node is uncertain due to weak data.   Hei1954 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
18362+6529  GC 25491- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
18384+0850  HU  198 - The M5e star is the Mira-type variable X Oph, P = 334 d, and at               
                      minimum often fainter than the K1 star. The motion so far is                  
                      rectilinear.                                                                  
                    - Spectrum composite; K1III+M6IIIe.                                             
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
18384+6708  STF2384 - Unobserved periastron can be covered by speckle in near future.       Sod1999 
18413+3018  STF2367 - Star C (mag. 8.83, 14") is physical.                                          
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Only elements P and T have been amended from the orbit of             Sta1977a
                      Baize (1950).                                                         Baz1950b
18426-0704  GC 25586- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin (1982).                                                       Grf1982a
18428+5938  STF2398 - A short-period motion in one of the components has been suspected             
                      repeatedly, but photographic measures do not show it. (Heintz 1978)   Hei1978d
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Parabolic orbit.                                                      Wie1953b
                      sigma = areal constant in the true orbit = 2.207 arcsec^2/yr                  
                      q = periastron distance in the true orbit = 16".603                           
18437+3141  A   253 - Only elements P, T, and a have been amended from the orbit of         Sta1978c
                      Muller (1956).                                                        Mlr1956b
18443+3940  STF2382 + STF2383                                                                       
                    - AB and CD form the physical quadruple Epsilon Lyrae, separation               
                      208". The position of CD is 184422.7+393643 (2000). The observed              
                      small RV variations in each pair are probably merely scatter due              
                      to the very poor lines. Star C is an Alpha CVn type variable.                 
                      The longitude of periastron in the orbit of CD has been corrected.    Gzl1956a
18472-0445  bet Sct - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Young (1927).                                                         YRK1927 
18512+5923  omi Dra - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Young (1920).                                                         YRK1920 
18531+7405  GC 26011- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
18537-0533  A    93 - Wilson's value for omega was corrected by Muller.                     WRH1954c
                                                                                            Mlr1954d
18541+1500  HD175292- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
18547+2239  MKT   9 - 113 Her.                                                                      
                    - Visual orbit based on astrometry from Mark III interferometer.        MkT1995 
                      Additional spectroscopic data yield component masses, luminosities,           
                      radii, effective temperatures, and distance.                                  
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Hummel et al. (1995).                                                 MkT1995 
18570+3254  BU  648 - Identification of the ascending node is somewhat uncertain.           Stk1939 
18596+1504  eps Aql - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin (1982).                                                       Grf1982b
19012+0229  GC 26129- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
19021+5216  HU  757 - Star A (mag. 6.3, 5", G8III) is physical and is in slow retrograde            
                      motion; A-BC = STF 2450.                                                      
19026-2953  HDO 150 - Zeta Sgr. Spectrum composite; A2III+A4IV.                                     
                    - Masses and bolometric magnitudes are derived for the two components           
                      of this system, based on assumed spectral types and available                 
                      parallaxes.                                                           Msn1999a
19039+2642  A  2992 - Only elements P, T, and a of Dom1978 were adjusted.                   Sta1981a
19062+3026  STF2454 - Dommanget's two observations of star A to be a very close pair are            
                      unconfirmed. However, A is a SB2, P = 27.25d. From the visual                 
                      separations of AB, Baize suspects a third body with P = 35 yr.                
                    - Only elements P and T have been amended from the orbit of             Sta1982b
                      Baize (1976).                                                         Baz1976 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
19069-2740  tau Sgr - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
19074+3230  KUI  90 - Combined solution from astrometry, spectroscopy, and parallax.                
                      Solution yields mass and orbital parallax determination.              Sgr2000 
19083+2522  HD178593- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
19089+3404  COU1462 - More observations needed to define orbit.                                     
                    - Elements determined by Mante (1999) were also published by the same   Mnt1999b
                      author in Obs. Trav. SAF 52, 44, 2000.                                        
19098-1948  B   427 - Voronov orbit rejected from Fourth Catalog                            Vor1934 
                      ("probably not double")                                               Wor1983 
19111+3847  SE    2 - A-BC triple solution.                                                 Sod1999 
                    - The pair BC is 4.5" Nf star A (mag. 8.4, G5) and is in slow           B__1960b
                      retrograde motion about it. The combined light of B and C is                  
                      slightly brighter than that of A; thus the quadrant of A-BC                   
                      (= STF 2481) is sometimes confused.                                           
19121+0254  AST   1 - Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
                    - Solution includes absolute orbits for both components, errors                 
                      for individual elements, component masses, etc.                       AST2001 
19143-0843  GC 26500- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
19143+1904  STF2484 - The semi-major axis value of 2".041 in Hopmann (1973)is apparently a  Hop1973b
                      typo. The value was changed to 2".841 in the orbit catalog to better          
                      match the observations.                                                       
19155-2515  B   430 - Psi Sgr. Star B is SB2, P = 10.78 d.                                          
19167-4553  RST4036 - Strange (but useable) reference point for the Transit Data due to             
                      reversed signs for proper motions in the Hipparcos Input Catalog.     Sod1999 
19172-6640  GLE   3 - Spectrum composite; A5V+A8V.                                                  
19205-0525  ISO  10 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Franklin (1952).                                                      Frn1952 
19253-2431  FIN 327 - Chi 1 Sgr. We apparently view the pair at nearly 90 deg inclination,          
                      and since the delta m for the components is near zero there is                
                      considerable ambiguity between a high-eccentricity short-period               
                      orbit and a low-eccentricity long-period one.                         Hrt1993 
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Finsen (1965).                                                        Fin1965b
19255+0307  BNU   6 - Delta Aql. A is SB, now resolved by speckle interferometry.                   
                    - Astrometric solution adopting some elements from the spectroscopic    HIP1997d
                      orbit of Kamper et al. (1989).                                        Kpr1989 
19287+3437  LTT15689- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
19296-1239  HU   75 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
19307+2758  MCA  55 - Beta 1 Cyg. See the discussion of colors and magnitudes of this               
                      composite spectrum system by Bonneau & Foy (9180).                    Bnu1980a
                      McAlister & Hendry (1982) also note a distant companion.              McA1982b
19311+5835  MCA  56 - Baize's (1989) value for omega was corrected from 0.0 to 180.0        Baz1989b
                      degrees by Ruymaekers & Nys (1995).                                   Ruy1995 
                    - Spurious HIP solution for fast-moving 1.35 y pair. SB2 solution               
                      in Batten et al., 1989 PDAO, 17, 1 (# 1162), speckle-spectroscopic            
                      orbit worthwile.                                                      Sod1999 
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - combined solution of astrometric orbits and DSBs. Paper includes      Are2000 
                      masses, distances, and errors.                                                
19348+2928  WRH  32 - 9 Cyg. A long-period SB resolved by interferometry.                           
19350+2328  A   162 - Only elements P, T, and a have been amended from the orbit of         Sta1982b
                      Erceg (1975).                                                         Erc1975 
19394+3009  MCA  57 - Phi Cyg. SB2, with elements P, T, e from the orbit by Rach & Herbig           
                      (1961 ApJ, 133, 143). Resolved by speckle interferometry.                     
                    - Data from Mark III interferometer combined with reinterpretation of           
                      Rach & Herbig to determine distance, masses, and absolute magnitudes          
                      for this pair of giants. Evolutionary history is discussed.           MkT1992c
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - P adopted from spectroscopic orbit of Rach & Herbig (1961 ApJ, 133,           
                      143). Authors combine spectroscopic orbit with visual orbit from      MkT1992d
                      Mark III astrometry to derive distance, masses, absolute magnitudes.          
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Armstrong et al. (1992).                                              MkT1992c
19398-2326  SEE 389 - 53 Sgr. Spectrum composite; B9.5V+A3IV.                                       
                    - Baize's (1985) value for omega was corrected from 270.0 to 90.0       Baz1985b
                      90.0 degrees by Ruymaekers & Nys (1995).                              Ruy1995 
19411+1349  KUI  93 - A is the Algol-type system QS Aql.                                            
19418+5032  STFA 46 - A family of possible orbital solutions are determined, with periods   Rmn1994 
                      ranging from 124,000 to 451,000 years, using the method of apparent           
                      motion parameters and incorporating parallax and radial velocity              
                      information.                                                                  
                    - Based on combined astrometry, velocity information, and Hipparcos     Mcy1999 
                      parallax, the authors determine a family of possible orbits, with             
                      periods ranging from 18,200 yr to 1.3 Myr, depending on the                   
                      line-of-sight separation between the components. A second family of           
                      possible orbits are determined assuming the Ab (or "C") component is          
                      a physical component of the system.                                           
19420+4015  KUI  94 - Apastron poorly covered.                                                      
19431-0818  GC 27279- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
19450+4508  STF2579 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
19456+3337  STF2576 - The longitude of periastron has been reversed to represent the                
                      quadrant given by all recent observations.                            Rab1948a
                    - Common proper motion with ADS 12913 = STF 2580 (mags. 5.01-8.55,              
                      26", F5 and K8) which is 808" distant.                                        
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
19458+2710  KUI  95 - Indeterminate (long) period but useable a^3/P^2.                              
                    - Missing in HIP because of poor Input Catalogue position.              Sod1999 
19474+1832  BLA   6 - Delta Sge, a variable.                                                        
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
19487+1504  A  1658 - Only elements P, T, and a of Couteau (1963) were adjusted in orbit    Cou1963c
                      by Starikova (1981).                                                  Sta1981a
19490+1909  AGC  11 - Zeta Sge. Probably quadruple. The fast RV variation found at three            
                      spectrographs, and not explained by the visual motion, suggests a             
                      spectroscopic companion. Star C (mag. 9.04, 8.5") is physical;                
                      AB-C = STF 2585.                                                              
19491-6149  I   120 - Star C (mag. 9.2, 14") is physical; AB-C = HJ 5141.                           
19529+4105  HD188307- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
19550+4152  HO  581 - One star, probably the primary, is SB1, P = 155.0 d (Observatory 97,          
                      15, 1977; cf. also ApJS 46, 247, 1981; #1187 in Batten et al., 1989           
                      PDAO, 17, 1).                                                                 
                    - Muller (1953) corrected an error in the semi-major axis by            Mlr1953a
                      Van Biesbroeck.                                                       VBs1927 
19573+0513  A   604 - Toledo's elements, residuals, and ephemeris are mutually                      
                      inconsistent. The quoted elements have been reconstructed by Finsen           
                      to fit the published residuals.                                       Zae1963 
19580+0456  A   606 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Period incorrectly given as 125.49 (erratum in Inf. Circ. 93, 1984)   Baz1984b
19598-0957  HO  276 - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
20014+1045  STF2613 - A component is a SB.                                                          
20102+4357  STT 400 - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Eccentricity incorrectly given as 0.468; correct value 0.486          Hei1985d
                      (Erratum noted in Inf. Circ. 98, 1986)                                        
                    - Incorrect value of omega given by Burnham (1898); corrected by        Bu_1898 
                      Doberck (1898)                                                        Dob1898c
20113-0049  MKT  10 - Theta Aql.                                                                    
                    - Visual orbit based on astrometry from Mark III interferometer.        MkT1995 
                      Additional spectroscopic data yield component masses, luminosities,           
                      radii, effective temperatures, and distance.                                  
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Hummel et al. (1995).                                                 MkT1995 
20136-3827  GC 28055- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
20136+4644  WRH  33 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Wright (1970).                                                        Wri1970 
20154+4743  omi2 Cyg- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Wright (1970).                                                        Wri1970 
20157+4339  A  2095 - Variability of one component has been suspected.                              
                    - Derived orbital parallax 0".01636                                     Lin2004a
20169+5017  GC 28207- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
20181+4044  CHR  96 - This is one of four new binaries found in a duplicity survey of               
                      all bright (V<8) galactic O stars.  This system is also a known               
                      311-day SB1 (McKibben et al. 1998, PASP, 110, 900).  The                      
                      classifications of the C and D components are from Hoffleit &                 
                      Warren (1991, Bright Star Catalog, Fifth Revised Edition,                     
                      preliminary version).                                                 Msn1998a
20201+2338  HD193554- Astrometric solution assuming circular orbit (e = omega = 0)          HIP1997d
20203+3924  A  1427 - Star C (mag. 9.2, 3") is physical; AB-C = STF 2668.                           
                    - AO photometric analysis includes mass determination.                  TtB2000 
20210+4437  A   725 - Erratum noted in IAU Circ 113, 1991: Omega = 50.2                     Lin1989a
20210-1447  BLA   7 - Beta Cap. Triple system, including 8.7-day SB.                                
                    - Period and eccentricity adopted from Evans & Fekel (1979);            OCC1979b
                      other elements generated from occultation and speckle data.           Msn1994 
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Evans & Fekel (1979).                                                 OCC1979b
                    - Alden (1936) orbit adopted P, T, and e from the spectroscopic orbit   Ald1936b
                      of Spencer Jones (Ann. Cape Obs. 10, pt. 8, 76, 1928)                         
                    - Alden orbit rejected from Fourth Catalog                              Wor1983 
                      ("object still suspected to be binary by some, but no even                    
                      approximately reliable or complete elements yet available")                   
20216+1930  COU 327 - One component is an SB, P = 70.53d.                                           
20296+6300  the Cep - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Abt (1961).                                                           AbH1961 
20298+0941  AST   2 - GJ 791.2 = HU Del. HST Fine Guidance Sensor data were used to derive  AST2000 
                      perturbation orbital parameters, distance, component masses, and              
                      absolute magnitudes for this nearby low-mass binary. AST2000                  
                      calculate a true semi-major axis of 108.8 +/- 0.7 mas, while          Hrr1971 
                      calculates a value of 0".10.                                                  
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
20311+3333  COU1962 - More speckle obs needed to cover the orbit.                                   
20329+4154  BLA   8 - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Duquennoy & Mayor (1991).                                             Duq1991 
                    - Combined spectroscopic/interferometric orbit, including visibility    Trr2002 
                      data from the Palomar Testbed Interferometer. Additional elements             
                      for this metal-poor binary are:                                               
                         gamma    = -5.841          0.037   km/sec                                  
                         KA       = 28.926          0.046   km/sec                                  
                         KB       = 36.72           0.21    km/sec                                  
                         dm       = 1.056           0.013   mag (K band)                            
                                    1.154           0.065   mag (H band)                            
                         parallax = 46.08           0.27    mas                                     
                         masses   = 0.844           0.018   Msun                                    
                                    0.6650          0.0079  Msun                                    
20374+7536  HEI   7 - The primary is the class W eclipsing SB VW Cep, P = 0.278 d. The              
                      light amplitude is 0.5 mag. and the light curve is variable.                  
                    - The Hershey (1975) orbit is astrometric; only the value of the        Hry1975 
                      semi-major axis was computed after the companion was resolved. The            
                      ascending node is tentatively identified from what appears to be a            
                      lighttime effect superimposed on intrinsic period changes in the              
                      eclipsing pair. BD+74 889 (mag. 7.9, G5) 1 degree distant appears             
                      to share the proper motion. The Hershey solution gives errors for             
                      individual elements.                                                          
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
20375+1436  BU  151 - Beta Del. Primary giant according to isochrone fit                    Sod1999 
                    - AO photometric analysis includes mass determination.                  TtB1996b
                    - AO photometric analysis includes mass determination.                  TtB2000 
20396+1555  WCK   2 - Alpha Del. An SB now resolved by interferometry.                              
20396+0458  KUI  99 - Visual primary is 920d SB2 (#1253 in Batten et al., 1989 PDAO, 17,            
                      1). Some spectroscopic evidence for a third star.                             
20419-3226  LDS 720 - Star A (mag 8.6, M0Ve) 1.3 deg distant; position 204509.5-312027              
                      (2000) shares the large proper motion. Star C is the flare star               
                      AT Mic.                                                                       
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
20474+3629  MCA  63 + STT 413                                                                       
                    - Lambda Cyg. The primary has a variable RV, and has been resolved by           
                      speckle interferometry into a close, rapidly moving pair.                     
                    - Orbit includes errors for individual elements.                        Bag1989b
                    - Only elements P and T have been amended from the orbit of             Sta1982b
                      Baize (1983).                                                         Baz1983 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
20494+1124  J   194 - Triple solution together with C (HIP 102784), which is clearly                
                      optical with a faulty HIP position.                                   Sod1999 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
20514-0538  STF2729 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
20527+4607  A   750 - Only elements P and T of Muller (1955) were adjusted in computing     Mlr1955b
                      the solution of Starikova (1981).                                     Sta1981a
20583+4428  GC 29274- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Radford (1975).                                                       Grf1975 
20591+0418  STF2737 - Epsilon Equ. Quadruple system. Star A is SB1, P = 2.03 d. Star C              
                      (mag. 7.3, dF4) is in slow retrograde motion at 10".                          
20591+0418  STF2737 - AB,C. Hyperbolic orbit. Ephemeris covers the years 1831-2042.         Zel1965 
                      sigma = areal constant in the true orbit = 0.1952 arcsec^2/yr                 
                      q = periastron distance in the true orbit = 10".78                            
21000+4004  KUI 103 - Astrometric orbit, with only the semi-major axis derived from visual          
                      separations. The longitude of periastron has been reversed to                 
                      correspond to the visual position angles.                             Lip1975 
                    - Visual primary is a BY Dra-type variable, and 3.3d SB2 (#1280 in              
                      Batten et al., 1989 PDAO, 17, 1).                                             
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
21044-1951  FIN 328 - Eta Cap. Ruymaekers & Nys (1955) noted discrepancies in the orbit of  Ruy1995 
                      Zulevic (1993), so calculated orbital elements from the Thiele-Innes  Zul1993b
                      elements originally given.                                                    
                    - This system has a Delta m of about 1.7 +/- 0.7 magnitudes, as                 
                      determined from lunar occultation measures (Evans & Edwards 1983).    OCC1983a
                    - Masses and bolometric magnitudes are derived for the two components           
                      of this system, based on assumed spectral types and available                 
                      parallaxes.                                                           Msn1999a
                    - AO photometric analysis includes mass determination.                  TtB2000 
21047+0332  SE    3 - Star A (mag. 8.4, 3", G0) is physical and shows significant direct            
                      motion; A-BC = STF 2749.                                                      
21069+3845  STF2758 - 61 Cyg. An estimated mass has been used to compute the otherwise              
                      nearly indeterminate orbit; thus the orbit should not be used to              
                      compute the mass. The RV difference from which the ascending node is          
                      inferred is quite small. Various small variations, formerly                   
                      suspected in the period range of about 5-10 years, are absent in the          
                      strong photographic coverage of the last decades.                     Jti1981 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
21074-0814  BU  368 - Baize (1985) value of omega corrected from 12.0 to 192.0 degrees by   Baz1985b
                      Ruymaekers & Nys (1985).                                              Ruy1995 
21124-1500  H 1  47 - Apparent typographical error in Hopmann value for semi-major axis     Hop1974 
                      (5".909); value of 15".909 appears better. Still unable to match his          
                      orbit with data, however, despite various quadrant flips of angles,           
                      et cetera. A least-squares fit for remaining elements using data              
                      available to Hopmann and fixing P, T, and e at his published values           
                      yields a = 10".03, i = 101.0, Omega = 312.0, and omega = 343.4                
                    - Hopmann orbit rejected from Fourth Catalog ("P over 4000 years")      Wor1983 
21135+0713  BU  270 - Star C (mag. about 12, 32") may be physical. Star D (BD+06 4777, 3')          
                      probably is not physical.                                                     
21137+6424  H 1  48 - Only elements P and T have been amended from the orbit of             Sta1977a
                      Baize (1950).                                                         Baz1950b
21145+1000  STT 535 - Delta Equ. The motion causes double spectral lines over part of the           
                      orbit, but the components are indistinguishable in the spectrum as            
                      well as visually. The RV curve gives the elements T, e, and the               
                      longitude of periastron somewhat in variance with those of the                
                      visual orbit; cf. PASP 83, 207, 1971.                                         
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - AO photometric analysis includes mass determination.                  TtB2000 
                    - combined solution of astrometric orbits and DSBs. Paper includes      Are2000 
                      masses, distances, and errors.                                                
21147-0050  A   883 - Star C (mag. 10.52, 21") is probably physical; AB-C = STF 2775.               
21148+3803  AGC  13 - Tau Cyg. Identification of the ascending node is probable although            
                      small variations of non-orbital origin superimpose on the RV. A is a          
                      Delta Scuti-type variable. A faint star listed as component Q (mag.           
                      12, 90") in IDS is physical; linear formula given by Heintz.                  
                    - AO photometric analysis includes mass determination.                  TtB2000 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
21158+0515  WRH  35 - Alpha Equ. P = 98.800 d, adopted from Rosvick & Scarfe (1991 MNRAS,           
                      252, 68); T = 2447592.1. Combined spectroscopic/astrometric orbit.            
                      Quoted errors in T and omega are +3.6/-10.1d, +14/-37deg,             MkT1992b
                      respectively.                                                                 
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
21186+1134  BU  163 - Primary is 4.0d SB2. Mass-sum in good agreement with the              Fek1997 
                      complete speckle-spectroscopic analysis by Fekel et al. (1997).       Sod1999 
                      The Feke solution gives errors for individual elements.                       
                    - AO photometric analysis includes mass determination.                  TtB2000 
21198-2621  BU  271 - A is an SB.                                                                   
21214+1020  A   617 - Both spectra are visible. The component with the slightly weaker              
                      lines is an SB1, P = 2.24 d. (#1297 in Batten et al., 1989 PDAO,              
                      17, 1) For the visual pair West (1976) computed the elements P, T,    Wst1976 
                      e, and the longitude of periastron also from the RV's (orbit 3);              
                      tentative elements a, i, and the node have been added by Heintz in            
                      order to have a complete listing. Since the components are visually           
                      indistinguishable, the quadrant of the ascending node (but not the            
                      longitude of periastron) is arbitrary; with the node chosen as                
                      listed, the close pair would be the eastern component when the                
                      visual pair is at maximum separation. The pair was long assumed to            
                      have a 12 yr period.                                                          
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      West & McAlister (1981).                                              Wst1981 
21223+5734  A   764 - BD+57 2562 (mag. 8.6, 84", K0) shares the proper motion.                      
21247-6814  GC 29928- Astrometric solution assuming circular orbit (e = omega = 0);         HIP1997d
                      errors given for individual elements.                                         
21313-0947  BLA   9 - Combined solution from astrometry, spectroscopy, and parallax.                
                      Solution includes errors and yields mass and orbital parallax                 
                      determination.                                                        Sgr2000 
21355+2427  HU  371 - Possibly triple; Dominion Astrophysical Observatory spectra showed            
                      a double spectrum.                                                            
                    - Only elements P and T have been amended from the orbit of             Sta1977a
                      Baize (1961).                                                         Baz1961a
21369+4025  74 Cyg  - Astrometric solution assuming circular orbit (e = omega = 0);         HIP1997d
                      errors given for individual elements.                                         
21378-0751  xi Aqr  - photocentric (astrometric) orbit based on combination of ground-      Gon2002 
                      based catalogs with Hipparcos. Errors are given for all elements.             
21379+2743  HDS3080 - CC 1299                                                                       
                    - Marginal detection of 14th mag secondary, but mass-sum too large and          
                      more GB obs needed to define orbit. (HIP solution is slit-error).     Sod1999 
                    - The companion has been detected by infrared speckle interferometry    Mcy1983 
21395-0003  BU 1212 - 24 Aqr. One component is SB; the RV range in the combined light is            
                      45 km/s.                                                                      
                    - Branham (2005) uses this system illustrate a method for calculating           
                      orbital elements. His elements are not included in the catalog, as            
                      he considers them only an example.                                    BRL2005 
21401-1640  gam Cap - Astrometric solution assuming circular orbit (e = omega = 0);         HIP1997d
                      errors given for individual elements.                                         
21415-7723  BLM   6 - Astrometric orbit with P, T, e taken from the spectroscopic orbit             
                      by Colacevich. Not reinvestigated since.                              Ald1939b
21424+4105  KUI 108 - 77 Cyg. One component is an SB1, P = 1.73 d.                                  
                    - The system may be physically related to BU 688 according to Eggen     Egg1965b
                      (1965), and thus quintuple.                                                   
21426+4103  BU  688 - Only elements P and T have been amended from the orbit of             Sta1984 
                      Baize (1981).                                                         Baz19781
21441+2845  STF2822 - Mu Cyg. The A component is an SB2.                                            
21446+2539  BU  989 - Kappa Peg. Probably quadruple. The SB1 with P = 5.97 d (#1329 in              
                      Batten et al., 1989 PDAO, 17, 1) is believed to be the visual                 
                      component B, and a set of double lines is observed which is ascribed          
                      to star A (PASP 88, 200, 1976). The visual star C, however, is                
                      optical; AB-C = STF 2824 (separation 14").                                    
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
21466-5742  FIN 283 - Two orbit solutions by Finsen (1977) and Soderhjelm (1999); the       Fin1977b
                      long-period solutions appear to fit the observations marginally       Sod1999 
                      better, but there is no clear preference. Soderhjelm feels that in            
                      both cases there is a probable secondary sub-system. Speckle and              
                      spectroscopic observations needed.                                            
21501+1717  COU  14 - 13 Peg. Giant (F2 III-IV) class. probably wrong. A possible                   
                      Delta Scuti-type variable.                                                    
21538-2000  HU  380 - Star A (mag. 8.12, 5", dF2) is physical; A-BC = BU 168.                       
21539+2821  GC 30661- Astrometric solution assuming circular orbit (e = omega = 0);         HIP1997d
                      errors given for individual elements.                                         
21556+3849  A  1449 - Baize (1982) orbit rejected from Fourth Catalog                       Baz1982 
                      ("rescinded by author; omitted from publication")                     Wor1983 
21567+6338  WRH  36 - VV Cep                                                                        
                    - Fredrick orbit rejected from Fourth Catalog                           Frd1960 
                      ("amplitude below noise level")                                       Wor1983 
21579-5500  FIN 307 - Delta Ind. Two orbit solutions by Churms (1965); no clear preference  Chu1965 
                      between short- and long-period orbits.                                        
                    - Finsen called attention to quasi-periodic residuals in position               
                      angle which neither of the alternative orbits explains.                       
                    - Illustrative solutions with useable astrometric mass-ratios. Short-P          
                      solution marginally better, but indeterminate with strong element-            
                      correlations. Probably giant primary, more speckle-data needed.       Sod1999 
21585-5901  kap1 Ind- Astrometric solution assuming circular orbit (e = omega = 0);         HIP1997d
                      errors given for individual elements.                                         
22007-5002  I  1450 - Heintz (1984) value of omega was corrected from 313.5 to 133.5        Hei1984a
                      degrees by Ruymaekers & Nys (1985).                                   Ruy1995 
22038+6438  MCA  69 + STF2863                                                                       
                    - Xi Cep. Aa is an astrometric binary and SB2, with elements by                 
                      Vickers & Scarfe (1975). The McAlister (1980) orbit is from speckle   McA1980a
                      interferometry, and in good agreement with the spectroscopic result.          
                      The McAlister orbit includes errors for individual elements.                  
                    - Star C (mag. about 12, 100") appears to be optical.                           
                    - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
22070+2521  iot Peg - SB2. Combined solution (visibilities from Palomar Testbed             Bod1999a
                      Interferometer, plus spectroscopy) Authors give two very similar              
                      solutions, made using two data sets. Values were averaged here.               
                      See also discussion of Iota Peg system by Morel et al. (2000).        Mrl2000 
22115+1731  HD210647- Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Griffin (1984).                                                       Grf1984b
22180-6249  I    20 - Derived orbital parallax 0".00741, mass sum 3.68 +/- 5.03 Msun        Lin2004a
22182-6300  LTT18565- Astrometric solution assuming circular orbit (e = omega = 0);         HIP1997d
                      errors given for individual elements.                                         
22186-6014  alp Tuc - Elements P, T, e in the astrometric solution have been taken from             
                      the spectroscopic orbit by Spencer Jones. Errors are given for                
                      individual elements.                                                  Ald1939a
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Alden (1939).                                                         Ald1939a
22280+5742  KR   60 - Star B is the flare star DO Cep, which is fairly active with flares           
                      of small to moderate amplitudes. All distant, faint companions                
                      listed in the IDS are optical.                                                
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
22288-0001  STF2909 + zet 2 Aqr                                                                     
                    - The close pair has been resolved by infrared speckle interferometry   Mcy1983 
                      (McCarthy 1983). Suspected variability of one of the components is            
                      unconfirmed.                                                                  
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
22300+0426  STF2912 - 37 Peg. Primary is an SB1, P = 372.4 d. Spectrum composite: F2V+F2V.          
22302+2228  HU  388 - BD +21 4772 , 4' distant, may have common proper motion (Eggen,               
                      AJ 70, 83, 1965).                                                             
22313-0633  CHR 111 - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Astrometric solution assuming circular orbit (e = omega = 0);         HIP1997d
                      errors given for individual elements.                                         
22317-1054  58 Aqr  - Astrometric solution assuming circular orbit (e = omega = 0);         HIP1997d
                      errors given for individual elements.                                         
22330+6955  STF2924 - Giant (A9 III) classification probably wrong.                                 
22357+5312  A  1470 - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
                    - Combined spectroscopic/visual orbit, also yielding orbital parallax           
                      and component masses and absolute magnitudes.                         Tok1993 
22361+7253  BU 1092 - Star D = BD +72 1051 (mag. 8.4, 42", dF7) is physical; AB-D = STT             
                      (App) 236. The faint star C (mag. 12, 40" increasing) is optical.             
22385+0218  HO  479 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
22385-1519  BLA  10 - GJ 866. One of the nearest stars. Combined spectroscopic/interfero-           
                      metric/photometric solution, yielding masses and temperatures, etc.   Lei1990 
                    - Very low mass triple. AC pair is 3.8-day SB orbiting B component.             
                      Combined spectroscopic/interferometric/parallax solution given for            
                      AC-B, including errors for individual elements. Resulting masses              
                      are placed on M-L diagram.                                            Del1999b
                    - Combined solution from astrometry, spectroscopy, and parallax.                
                      Solution includes errors and yields mass and orbital parallax                 
                      determination.                                                        Sgr2000 
22388+4419  HO  295 - Visual sec. is 552d SB2 (Duquennoy, 1987 A&A, 178, 114).                      
                    - Slight variability is reported.                                               
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
22408-0333  KUI 114 - Long-period (circular) orbit preferred, but strangely low mass-sum,           
                      probably still underestimated a.                                      Sod1999 
                    - Occultations indicate a third body?                                   Grf1987 
22409+1433  HO  296 - The star G 67-12 (mag. 14.88, 270") shares the proper motion.                 
                      Primary giant according to isochrone fit.                                     
22419+2126  STF2934 - It is not known with which component the probable subsystem is                
                      associated; thus, the assignment to component A is arbitrary.                 
22430+3013  BLA  11 - Eta Peg. An SB resolved by speckle interferometry. Spectrum of Aa             
                      composite; G2II-III+F0IV.  The elements P, T, e in the astrometric            
                      solution have been taken from the spectroscopic orbit by Crawford.            
                      The astrometric amplitude is marginal, and not certainly real.        Kam1957 
                    - The pair BC (mags. 10.1-10.1, 0.3") is 91" distant and probably               
                      physical; Aa-BC = BU 1144.                                                    
                    - Orbit includes errors for individual elements.                        MhT1998 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Crawford (1901).                                                      Crw1901 
22451-0240  A  2696 - Star A (mag. 9.36, 20", F8) is physical; A-BC = STF 2938.                     
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
22514+2623  HO  482 - Star C (mag. 10.88, 51") is optical.                                          
22520+5743  A   632 - Giant (K5III) classification probably wrong.                                  
                    - Possible triple?                                                      Dom1953b
22533-1416  Gl 876  - IL Aqr = Ross 780 = BD-15 6290. Star+planet pair. P, T, e, and        AST2002 
                      omega are constrained by RV measurements; other elements from HST             
                      FGS data. Derived parallax = 214.6 +/- 0.2 mas. Assuming mass of              
                      primary is 0.32Msun, planet mass = 1.89 +/- 0.34 Mjup.                        
22535-1137  MCA  73 - 74 Aqr. A spectroscopic, occultation, and interferometric system.             
                      The interferometric pair is not the spectroscopic pair, so the                
                      system is at least triple.                                            Msn1997a
22537+4445  BU  382 - The RV of the primary is probably variable; identification of the             
                      ascending node from observations near periastron is thus tentative.   Mlr1954b
                    - Visual primary is 24d SB1 (#1406 in Batten et al., 1989 PDAO, 17, 1)  Sod1999 
22552-0459  BU  178 - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
22570+2441  COU 542 - Aa is also an SB, P = 118.48d.                                                
22586+0921  STT 536 - Edge-on system; one of the components is an eclipsing binary.                 
                      Most speckle observations appear to be in `wrong' quadrant.                   
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
23018-0351  GC 32089- Astrometric solution assuming circular orbit (e = omega = 0);         HIP1997d
                      errors given for individual elements.                                         
23019+4220  WRH  37 - Omicron And. Spectrum composite: B6IIIpe+A2p. There appear to be              
                      both short and long period light variations.  B has been reported to          
                      be an SB2, P = 33.01d.                                                        
23026+4245  BU 1147 - 2 And. The RV of the primary is probably variable. The physical               
                      nature of star C (mag. about 13, 90") unknown.                                
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
23035-3445  pi PsA  - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Bopp et al. (1970).                                                   Bop1970 
23079+7523  pi Cep  - Astrometric orbit found by combining Hipparcos and Multichannel               
                      Astrometric Photometer data with spectroscopic elements of Scarfe             
                      et al. (1983 MNRAS 203, 103). Photographic semimajor axis is                  
                      estimated at 39.0 +/- 3.9 mas. Masses are determined for all three            
                      components of this triple.                                            Gat2001b
23079+7523  STT 489 - Pi Cep. Visual primary (G2 III) is 557d SB1 (#1425 in Batten et al.,          
                      1989 PDAO, 17, 1). Spectroscopic orbit was published by Scarfe et             
                      al. (1983 MNRAS, 203, 103)                                                    
23087+0208  5 Psc   - Astrometric solution assuming circular orbit (e = omega = 0);         HIP1997d
                      errors given for individual elements.                                         
23104-4515  iot Gru - Astrometric solution adopting some elements from the orbit of         HIP1997d
                      Jones (1928).                                                         Jon1928e
23114+3813  HO  197 - Star C (BD +37 4784, mag. 9, 40") may be physical; star D (+37 4783           
                      50") is optical.                                                              
23126+0241  A  2298 - Combined solution for this resolved SB2, yielding orbital parallaxes  Pbx2000 
                      and component masses.                                                         
23171-1349  BU  182 - Two orbit solutions (Heintz 1991); the short-period solution appears          
                      preferable.                                                           Hei1991 
                    - Van Biesbroeck (1961) reports a companion with cpm (mag. 17, 15").    VBs1961 
23179-1112  LTT 9469- Astrometric solution assuming circular orbit (e = omega = 0);         HIP1997d
                      errors given for individual elements.                                         
23186+6807  STF3001 - Omicron Cep.                                                                  
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
                    - System mass 3.65 +-0.60 Msun. G8III spectral type of primary                  
                      confirmed.                                                            Doc2003d
23191-1328  MCA  74 - 94 Aqr. A is a long-period spectroscopic binary now resolved by               
                      speckle interferometry.                                                       
                    - Triple solution with B (HIP 115125) instead of poor HIP-sol. Primary  McA1982c
                      overmassive, probably sp. bin., cf. McAlister & Hartkopf (1982).      Sod1999 
                    - Mcalister & Hartkopf orbit includes errors for individual elements.           
23218-1217  HU   95 - Combined magnitude from HD. Some visual observers report the pair             
                      to be brighter.                                                               
23304+3050  BU 1266 - Two orbit solutions (Eggen 1963) - only #1 now in catalog.            Egg1963 
                    - Triple-lined; both components are SB2's. Suspected light variation            
                      of the system is unconfirmed. Star C (mag. 9.87, 19") is physical;            
                      AB-C = STF 3018. Fekel (1986 private communication) reports that he           
                      has now detected four components in the spectrum of this star.                
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
23317+1956  WIR   1 - This is the flare star EQ Peg. Component B is suspected to be the             
                      source of the flares.                                                         
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
23340+3120  BU  720 - 72 Peg. Variable?                                                             
                    - Only elements P and T have been amended from the orbit of             Sta1982b
                      Baize (1976).                                                         Baz1976 
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
23487+6453  STT 507 - Star C (mag. 8.6, 50") is probably optical.                                   
23498+2741  A   424 - Only elements P, T, and a have been amended from the orbit of         Sta1978c
                      Morel (1969).                                                         Mrl1969c
23506-5142  SLR  14 - High but rather imprecise mass-sum.                                   Sod1999 
23518-0637  A  2700 - Masses and bolometric magnitudes are derived for the two components           
                      of this system, based on assumed spectral types and available                 
                      parallaxes.                                                           Msn1999a
                    - See Baize & Petit (1989) catalog of doubles with variable component.  Baz1989d
23524+7533  BU  996 - A is a SB.                                                                    
23529-0309  FIN 359 - Orbit includes mass determination.                                    Msn1997a
23568+0444  A  2100 - This system has a Delta m of 0.9 +/- 0.4 in the blue, as determined   OCC1975c
                      from lunar occultation measures.                                      Msn1997a
23582-5712  GC 33239- Astrometric solution assuming circular orbit (e = omega = 0);         HIP1997d
                      errors given for individual elements.