Triennial Report of IAU Commission 26 Information Circular

From June 2002 to June 2005 there had been published 10 Information Circulars corresponding issues number 147 to 156.

New orbits announced

A total of 185 new orbits had been announced in the Circulars, 119 of these belonging to stars of the Northern hemisphere and 66 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 | 147 | 148 | 149 | 150 | 151 | 152 | 153 | 154 | 155 | 156 |
+----------------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ 
| Andrade              |     |     |     |  1  |     |     |     |  1  |     |     |
| Alzner               |     |     |  1  |     |     |     |     |  1  |  2  |     |
| Costado              |  1  |     |     |     |     |     |     |     |     |     |
| Cvetkovic-Olevic     |     |     |     |     |     |     |     |     |     |  2  |
| Docobo               |     |     |     |     |     |     |     |  1  |     |     |
| Docobo-Andrade       |     |     |     |  1  |     |     |     |     |     |  2  |
| Docobo-Ling          |  2  |  5  |  3  |  2  |  1  |  4  |  3  |  2  |  4  |  1  |
| Docobo-Tamazian      |  1  |     |     |     |     |     |  1  |     |     |  1  |
| Docobo et al. (+)    |  1  |     |     |     |     |     |     |     |     |     |
| Docobo et al. (++)   |  1  |     |     |     |     |     |     |     |     |     |
| Hartkopf-Mason       |     |     |     |     |  1  |     |     |     |     |     |
| Ling                 |  1  |  1  |     |  1  |  1  |     |  1  |  1  |     |     |
| Ling et al. (x)      |     |     |     |     |     |     |     |     |  2  |     |
| Mante                |  2  |  2  |  2  |  2  |  2  |  3  |  2  |  2  |  4  |  2  |
| Mason-Hartkopf       |     |     |     |     |  4  |     |     |     |     |  2  |
| Olevic               | 10  | 19  |     |     |     |     |     |     |     |     |
| Olevic-Cvetkovic     |     |     |  6  |  4  |  5  |  3  |  4  |  4  |  6  |  2  |
| Pavlovic-Todorovic   |     |     |     |     |     |     |     |     |     |  4  |
| Popovic-Olevic       |  1  |     |     |     |     |     |     |     |     |     |
| Scardia              |     |  3  |  6  |     |     |     |     |     |     |     |
| Scardia-Bruzzi       |     |     |  1  |     |     |     |     |     |     |     |
| Scardia-Pansecchi    |     |     |     |     |     |     |     |     |     |  1  |
| Scardia et al (*)    |  3  |  2  |  3  |  1  |  2  |     |     |     |     |     |
| Scardia et al (**)   |     |     |     |     |     |     |  2  |     |     |     |
| Scardia et al (***)  |     |     |     |     |     |     |     |     |     |  1  |
| Tamazian             |     |     |     |  1  |     |     |     |     |     |     |
| Zirm                 |  2  |     |     |     |  5  |     |     |     |     |     |
| Zirm-Horch           |  1  |     |     |     |     |     |     |     |     |     |
+----------------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ 


(+)   Docobo J.A., Tamazian V. & Woitas J.
(++)  Docobo J.A., Tamazian V., Woitas J. & Leinert Ch.
(x)   Ling J.F., Prieto C. & Magdalena P.
(*)   Scardia M., Prieur J.L., Koechlin L. & Aristidi E.
(**)  Scardia M., Prieur J.L., Aristidi E., Koechlin L. & Sala M. 
(**)  Scardia M., Prieur J.L., Pansecchi L. & Argyle, R.

New double stars

• Circular No. 156: FMR 5 (F. M. Rica)

Announcements

• Circular No. 147: Changes to the Washington Double Star (B. D. Mason and W. I. Hartkopf)
• Circular No. 148:
  • The Catalogue of the Components of Double and Multiple Stars (CCDM) (Second edition 2002) (J. Dommanget and O. Nys)
  • The survey of the double stars measurements discovered in Belgrade with Zeiss refractor 65/1005 cm (2002.5) (G.M. Popovic and R. Pavlovic)
  • Iberoamerica League of Astronomy (LIADA) Circular (F. M. Rica)
• Circular No. 149: Publications by J. Dommanget
• Circular No. 151: New Cassegrain telescope (D = 0.62 m; F = 6.2 m) at R. M. Aller Observatory (Spain) (J. A. Docobo)
• Circular No. 153: The speckle camera PISCO is operational on the 1 m telescope of I.N.A.F. - Obsservatorio Astronomico di Brera at Merate, Italy (M. Scardia et al.)
• Circular No. 155: A model of the orientation of the orbital planes of the visual double stars (J. Dommanget)
• Circular No. 155:
  • Changes in the Double Star Database (B. D. Mason, W. I. Hartkopf and G. L. Wycoff)
  • Journal of double star observations (B. D. Mason)
  • English version of LIADA circular $\sharp2$ (F. M. Rica)

Reports

• Circular No. 151: ``Summary of Sidney Business Meeting of Commission 26" (C. D. Scarf)

List of papers published on double and multiple stars

• Circular No. 149: 45 papers for 2002
• Circular No. 152: 62 papers for 2003
• Circular No. 155: 87 papers for 2004

Obituaries

• Circular No. 141: Geoffrey G. Douglass (1942-2005) by W. Hartkopf and B. Mason
• Circular No. 156: Richard L."Dick" Walker (1938-2005) by W. Hartkopf and B. Mason

Notes

• Circular 149: Rectification about JCT Fa (BD +60 274) noticed by J.C. Thorel
• Circular 153:
  • Errata in Circular 152 on WDS 22344+2623 (COU 540)
  • Others papers published in 2003
• Circular 154: Errata in Circular 144 on WDS 07043-0303 (A 519)
• Circular 155: Editors ask for current e-mail addresses of several Commission 26 members

September 2005
J.A. Docobo & J.F. Ling