Issue |
A&A
Volume 371, Number 2, May IV 2001
|
|
---|---|---|
Page(s) | 748 - 752 | |
Section | Celestial mechanics and astrometry | |
DOI | https://doi.org/10.1051/0004-6361:20010372 | |
Published online | 15 May 2001 |
CCD photometry, spin and shape model of the asteroid 1572 Posnania *
1
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, tmich@amu.edu.pl
Received:
19
January
2001
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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