Volume 371, Number 2, May IV 2001
|Page(s)||748 - 752|
|Section||Celestial mechanics and astrometry|
|Published online||15 May 2001|
CCD photometry, spin and shape model of the asteroid 1572 Posnania *
Astronomical Observatory, A. Mickiewicz University, Słoneczna 36, 60-286 Poznań, Poland
2 Copernicus Astronomical Center, Bartycka 18, 00-716 Warszawa, Poland
3 Astronomy Institute of the Academy of Sciences, Ondrejov, Czech Republic
4 Institute of Space Sensor Technology and Planetary Exploration, Rutherford str. 2, 12489 Berlin, Germany
5 Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona 85721, USA
6 Institut de Mecanique Celeste, 77 Av. Denfert Rochereau, 75014 Paris, France
Corresponding author: T. Michałowski, email@example.com
Accepted: 17 March 2001
Lightcurves of the asteroid 1572 Posnania were obtained at six observatories on 19 nights during four apparitions: in 1993, 1994-95, 1996, and 1999. The synodical period is found to be 8.048 hours and the observed amplitudes of brightness variations are in the range of 0.37-0.40 mag. The sense of rotation is retrograde with a sidereal period days. The ecliptic coordinates of the pole of this asteroid are and . The shape of Posnania can be approximated by a triaxial ellipsoid model with semiaxes ratios and .
Key words: techniques: photometric / minor planets: asteroids
© ESO, 2001
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