Rotation Period Determination for 2411 Zellner, 5293 Bentengahama and 9148 Boriszaitsev

Photometric observations of three main-belt asteroids were made from the Astronomical Observatory of the University of Siena (Italy) in order to determine their synodic rotation periods. For 2411 Zellner, we found a period of 2.975 ± 0.002 h with an amplitude of 0.33 mag. For 5293 Bentengahama, the period was 15.781 ± 0.002 h with an amplitude of 0.18 mag. For 9148 Boriszaitsev, we found 8.124 ± 0.02 h with an amplitude of 0.23 mag.