The authors present the results of photometric observations of 16 M-type asteroids performed from 1984 through 1990. The observations have been carried out at the Teramo and Torino Astronomical Observatories, Italy, and at the European Southern Observatory (ESO), La Silla, Chile. The authors have determined for the first time a reliable rotational period for the asteroids 369 Aeria (Psyn = 4h787), 785 Zwetana (Psyn = 8h919), and 798 Ruth (Psyn = 10h35). They have estimated the shape and the pole coordinates of 135 Hertha and 250 Bettina and also checked those of 16 Psyche, 21 Lutetia, 22 Kalliope, 129 Antigone, and 216 Kleopatra. Composite lightcurves have been derived for nine of the observed objects. Reasonably single lightcurve's coverage has been obtained for the majority of the remaining ones. For some asteroids transformations to the standard system have been performed.
Astronomy and Astrophysics Supplement Series
- Pub Date:
- October 1992
- Planetary Rotation;
- Astronomical Photometry;
- Light Curve;
- Lunar and Planetary Exploration