EDP Sciences
Free access
Volume 378, Number 1, October IV 2001
Page(s) L14 - L16
Section Letters
DOI http://dx.doi.org/10.1051/0004-6361:20011206

A&A 378, L14-L16 (2001)
DOI: 10.1051/0004-6361:20011206

CCD photometry of the binary asteroid 90 Antiope

T. Michalowski1, F. Colas2, T. Kwiatkowski1, A. Kryszczynska1, R. Hirsch1 and J. Michalowski3

1  Astronomical Observatory, A. Mickiewicz University, Sloneczna 36, 60-286 Poznan, Poland
2  Institut de Mécanique Céleste, 77 av. Denfert Rochereau, 75014 Paris, France
3  Poznan University of Technology, Poznan, Poland

(Received 23 July 2001 / Accepted 28 August 2001)

Lightcurves of the binary asteroid 90 Antiope were obtained at two observatories (Borowiec and Pic du Midi) on 14 nights in September through November 2000. The synodical period was found to be $16.496 \pm 0.001$ hours and the observed amplitude of brightness variation was 0.08 mag. This amplitude was due to the noncircular shapes of the components of the binary system rather than to mutual occultations. Some predictions of a possibility of observations of the eclipsing events during future oppositions have also been made.

Key words: techniques: photometric -- minor planets: asteroids

Offprint request: T. Michalowski, tmich@amu.edu.pl

© ESO 2001