Rotational properties of asteroids: CCD observations of nine small asteroids

Abstract

The observational programme on small asteroids (diameter less than about 50 km) is continued to enlarge the available dataset of small asteroids. The results are presented of CCD observations of nine small asteroids ( D≤23 km), performed in France with the 1.2 m telescope at Haute Provence Observatory and with the 2 m telescope at Pic du Midi Observatory. A total of 27 single night lightcurves for nine asteroids were obtained. All the objects were observed for the first time and rotational periods have been determined for all of the observed asteroids: 1992 Galvarino ( P syn = 7 h.004), 2419 Moldavia ( P syn = 2 h.412), 2921 Sophocles ( P syn = 4 h.778), 3247 Di Martino ( P syn = 5 h.445), 3623 Chaplin ( P syn = 8 h.361), 3986 Rozhkovskij ( P syn = 4 h.26), 4436 1983 EX ( P syn = 6 h.656), 5046 1981 DQ ( P syn = 6 h.050) and 1992 YG3 ( P syn = 8 h.91).