Perpustakaan Digital ITB

Abstract : Collisions play as a major mechanism among asteroids relating their origin and evolution. Knowledge about those sub-km sized asteroids as outcomes of collisional processes has been increased significantly from several continuous and dedicated survey observations. We present the spin and shape distributions of snia.il (sizes < 2 km) main-belt asteroids (MBAs) obtained from our lightcurve observation using the Subaru telescope. The observation was made using the wide-field camera (Suprime-Carr) near opposition and the ecliptic down to a limiting magnitude of I? = 24.6 map,. We found 73 asteroids show reliable spin periods. and 34 asteroids among them are fast-rotator candidates (spin periods < 2.2 ii) whose shapes tend to be spherical.