A&A Supplement series, Vol. 128, March II 1998, 525-540
Received May 15; accepted August 26, 1997
Physical studies of asteroids
XXXII. Rotation periods and UBVRI-colours for selected asteroids
J. Piironen - C.-I. Lagerkvist - A. Erikson - T. Oja - P. Magnusson - L. Festin - A. Nathues - M. Gaul - F. Velichko
Send offprint request: J. Piironen
Partly based on observations from
the European Southern Observatory, La Silla, Chile.
Astronomiska observatoriet, Box 515, S-75120 Uppsala, Sweden
Observatory, University of Helsinki, P.O. Box 14, FIN-00014 University of Helsinki, Finland
DLR, German Aerospace Research Establishment, Rudower Chausse 5, D-12489 Berlin, Germany
Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany
Astronomical Observatory, Kharkiv University, Sumskaya str. 35, 310022 Kharkiv, Ukraine
We present lightcurves of selected asteroids. Most of the asteroids were included to obtain refined spin periods. Enhanced periods were determined for 11 Parthenope, 306 Unitas and 372 Palma. We confirmed the spin periods of 8 Flora, 13 Egeria, 71 Niobe, 233 Asterope, 291 Alice, 409 Aspasia, 435 Ella and 512 Taurinensis. We determined also BV-colours for most of the included asteroids and UBVRI-colours for a total of 22 asteroids.
keywords: minor planets -- photometry
Copyright by the European Southern Observatory (ESO)