New orbits announced

A total of 245 new orbits had been announced in the Circulars, 183 of these belonging to stars of the Northern hemisphere and 62 to the Southern.

The following table lists the author(s) who announced them, together with the number of orbits contributed by each.

+--------------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ 
| Author(s)       CI | 138 | 139 | 140 | 141 | 142 | 143 | 144 | 145 | 146 | 147 |
+--------------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ 
| Andrade            |     |     |     |     |     |     |   1 |     |     |     |			
| Alzner             |     |     |     |   2 |     |     |   1 |     |     |     |			
| Alzner & Argyle    |     |     |     |     |   2 |     |   1 |     |     |     |			
| Argyle & Alzner    |     |     |     |     |     |   2 |     |     |     |     |
| Blanco             |     |     |   1 |     |     |     |     |     |     |     |							
| Costado            |     |     |     |     |     |     |     |     |     |   1 |										
| Docobo             |     |     |     |   1 |     |   1 |   1 |     |     |     |
| Docobo & Andrade   |     |     |     |     |     |     |     |     |   1 |     |	
| Docobo & Ling      |   2 |   3 |   3 |   2 |   3 |   3 |   4 |   5 |   3 |   2 |
| Docobo & Tamazian  |     |     |     |     |     |     |     |     |   2 |   1 |
| Docobo & Vasyuk    |     |     |     |   1 |     |     |     |     |     |     |						
| Docobo et al. (+)  |     |     |     |     |     |     |     |     |   3 |   1 |
| Docobo et al. (++) |     |     |     |     |     |     |     |     |     |   1 |
| Hartkopf           |     |   3 |     |   8 |     |     |     |     |     |     |						
| Hartkopf & Mason   |     |     |     |     |  13 |   6 |     |  13 |     |     |
| Heintz             |     |     |     |     |     |   5 |     |     |     |     |
| Ling               |   1 |     |     |     |     |   1 |   1 |   1 |   1 |   1 |
| Mante              |   2 |   1 |   1 |   1 |   2 |   2 |   2 |   3 |   3 |   2 |
| Mason	             |     |     |     |   1 |     |     |     |     |     |     |						
| Mason & Hartkopf   |  14 |     |     |     |     |   7 |  12 |     |     |     |
| Olevic             |     |     |     |     |     |     |     |     |   4 |  10 |
| Olevic & Jovanovic |     |     |     |   2 |     |     |     |     |   5 |     |	
| Olevic & Popovic   |     |     |     |   2 |     |     |     |     |     |     |								
| Popovic & Olevic   |     |     |     |     |     |     |     |     |   1 |   1 |
| Scardia            |     |     |     |     |   2 |   1 |   3 |   3 |     |     |
| Scardia et al (*)  |     |     |     |     |     |     |   3 |   5 |   4 |   3 |		
| Scardia et al (**) |     |     |     |     |     |     |     |   1 |     |     |
| Seymour            |     |     |     |     |     |     |     |   3 |     |     |
| Seymour & Hartkopf |     |   6 |     |     |     |     |     |     |     |     |
| Seymour & Mason    |   5 |   6 |   5 |     |     |     |     |     |     |     |
| Zirm	             |     |     |     |     |     |     |     |   3 |   3 |   2 |
| Zirm & Horch	     |     |     |     |     |     |     |     |     |     |   1 |
+--------------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ 
 

(+)  Docobo J.A., Tamazian V. & Woitas, J.
(++) Docobo J.A., Tamazian V., Woitas J. & Leinert
(*)  Scardia M., Prieur J. L., Koechlin L. & Aristidi, E.
(**) Scardia M., Prieur J.L., Aristidi E., Lopez B., Mignard F. & Carbillet, M.

New double stars

• Circular No. 138: COU 2702 (P. Couteau)
• Circular No. 140: 8 wide pairs included in WDS Catalog (J. F. Courtout)
• Circular No. 141: JCT 4 AB (J. C. Thorel)
• Circular No. 143: HEI 914, HEI 915, HEI 916, HEI 917, HEI 918 (W. D. Heintz)

Micrometer measurements

• Circular No. 139: 46 measurements of 17 binary stars made by J.A. Docobo, J.F. Ling, & V. Lanchares

Announcements

• Circular No. 138:
  • A proposed JD "Designations of stellar companions" for 25th IAU General Assembly (B. Mason)
  • Speckle camera for the R.M. Aller astronomical observatory (J.A. Docobo et al.)
• Circular No. 142:
  • The database SINODIe (D. Bonneau)
  • E-mail deliver of the Circulars (Editors)
• Circular No. 143:
  • Changes in the Washington Double Star databases (B.D. Mason & W.I. Hartkopf)
• Circular No. 144:
  • Catalogue of orbits and Ephemerides of Visual Double Stars of the R.M. Aller Observatory (J.A. Docobo et al.)
• Circular No. 146:
  • Subset of measures in the Washington Double Star database (B.D. Mason & W.I. Hartkopf)
  • The Tycho Double Star Catalogue (C. Fabricius et al.)
• Circular No. 147:
  • Changes to the Washington Double Star (B.D. Mason & W.I. Hartkopf)

Reports

• Circular No. 142: "Commission 26 Business Meeting, Manchester August 2000" (C. Scarf)

List of papers published on double and multiple stars

• Circular No. 140: 57 papers for 1999
• Circular No. 143: 45 papers for 2000
• Circular No. 146: 45 papers for 2001

Obituaries

• Circular No. 141:
  • Paul Muller (1910-2000) by J.C. Thorel
  • In memoriam of Dr. Paul Muller by J.A. Docobo & J.F. Ling
• Circular No. 142:
  • Kaj A. Strand (1907-2000) by C. Scarfe

Notes

• Circular 141:
  • Errata noticed by B. Mason
  • A Paper published by M. Odenkirchen & P. Brosche
• Circular 145:
  • Errata noticed by the editors
  • Others papers published in 2000