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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. Piironentex2html_wrap1454 - C.-I. Lagerkvisttex2html_wrap1456 - A. Eriksontex2html_wrap1458 - T. Ojatex2html_wrap1456 - P. Magnussontex2html_wrap1456 - L. Festintex2html_wrap1456 - A. Nathuestex2html_wrap1458 - M. Gaultex2html_wrap1468 - F. Velichkotex2html_wrap1470

Send offprint request: J. Piironen Partly based on observations from the European Southern Observatory, La Silla, Chile.

tex2html_wrap1472  Astronomiska observatoriet, Box 515, S-75120 Uppsala, Sweden

tex2html_wrap1474  Observatory, University of Helsinki, P.O. Box 14, FIN-00014 University of Helsinki, Finland

tex2html_wrap1476  DLR, German Aerospace Research Establishment, Rudower Chausse 5, D-12489 Berlin, Germany

tex2html_wrap1478  Max-Planck-Institut für Kernphysik, Postfach 103980, D-69029 Heidelberg, Germany

tex2html_wrap1480  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)