adviser: Prof. T. Michalowski, caregiver: Dr. A. Kryszczynska
The new survey of the Koronis family of asteroids show non - random orientations
and spin rates (Silvan, 2002). This phenomenon could be explained by
long - term dynamical evolution, called Yarkovky effect. Finding similar group of
spins asteroids in another family could be verification for Yarkovky effect theory.
The present work is a part of science project in Astronomical Observatory of
Adam Mickiewicz University in Poznan, its aim is to collect data on asteroids spin
vector sidereal periods of rotation and shapes.
This paper is a collection of data on physical properties of the Flora family
asteroids. Up to now was observed 90 small bodies from this family asteroids and
for it are data presented.
For the determination of physical parameters of asteroids it is necessary to use
photometric data from three opposition, that is why gathering process takes a few
years. For asteroids: 291 Alice, 367 Amicitia and 825 Tanina new photometric
observations carried out at Observatory: Borowiec, Pic du Midi and Rozhen are
presented. Were used the new ligthcurves and published oppositions for obtained
siedereal periods, senses of rotation and shapes for the three asteroids.
There is a list enclosed to this paper, containing information about observation
carries out and future opposition for individually asteroids of the Flora family.
Silvan S.M., 2002, Spin vector alignment of Koronis family asteroids,
Nature, 419, 49-51.