Forum Springer Astron. Astrophys.
Forum Whats New Search Orders

Astron. Astrophys. 320, 652-658 (1997)

Table of Contents
Available formats: HTML | PDF | (gzipped) PostScript

The Bordeaux meridian observations of asteroids. First determination of the mass of (11) Parthenope *

B. Viateau and M. Rapaport

Observatoire de Bordeaux, URA 352, CNRS, BP 89, F-33270 Floirac, France

Received 14 March 1996 / Accepted 20 August 1996


The asteroid observations made with the automatic meridian circle at Bordeaux observatory from 1985 to 1994, and which have recently become available, are presented. The residuals of these observations obtained using the orbital elements published in the "Ephemerides of Minor Planets for 1996" are analysed. An anomaly for the asteroid (17) Thetis was found, indicating a current close encounter between this asteroid and (4) Vesta. Such an encounter will allow very interesting determinations of the mass of Vesta to be made in the future. Lastly, our determination of the mass of (11) Parthenope is discussed, which was based on its perturbations on the orbit of Thetis. The result obtained, [FORMULA] M [FORMULA], appears significant.

Key words: minor planets, asteroids – astrometry – ephemerides – planets: 11 Parthenope; 4 Vesta; 17 Thetis

* Figs. 5, 8, 9, 11, and 12 and Tables 1, 5, 6, and 7 are only available in electronic form via anonymous ftp or via http://cdsweb.u-strasbg.fr/Abstract.html

Send offprint requests to: B. Viateau

© European Southern Observatory (ESO) 1997

Online publication: June 30, 1998