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Photometric CCD observations of the small main-belt asteroid 11264 Claudiomaccone, carried out with the 0.7-m telescope at Chuguev Observation Station (Kharkiv, Ukraine) in November 2004 and the 1-m telescope at Simeiz Observatory (Crimea, Ukraine) in December 2004, have shown the presence of two different periods in asteroid brightness variations. A short period of 3.1872±0.0006h and long one of...
Photometric observations of 1620 Geographos in 1993 and 1994 are presented and, in combination with previously published data, are used to derive models of Geographos. We estimate that the sidereal period of rotation is 0.21763860 ± 0.00000003 days (5 h 13 m 23.975 s ± 0.003 s ). The sense of rotation is retrograde. The ecliptic coordinates of the spin angular velocity...
The constants of the empirical dependences, used for defining asteroid albedos from polarimetric observations, were determined almost 20 years ago. Since then, asteroid albedos have been derived from ground-based radiometric observations, IRAS data, and observations of stellar occultations by asteroids. Using all these data and also newly available polarimetric observations of asteroids, we have obtained...
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