 In October 2007, a rotational lightcurve of "Gerasimovich" was obtained from photometric observations by Maurice Clark at Montgomery College Observatory.Lightcurve analysis gave a rotation period of 22.951 hours with a brightness amplitude of 0.12 magnitude ().According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, "Gerasimovich" measures between 7.11 and 9.46 kilometers in diameter and its surface has an albedo between 0.12 and 0.318.