 In the 1990s, a rotational lightcurve of "Richilde" was first obtained from photometric observations by astronomers using the ESO 1-metre telescope at the La Silla Observatory in Chile.Lightcurve analysis gave a well-defined rotation period of 9.860 hours with a brightness variation of 0.32 magnitude ().In October 2006, a concurring period of 9.870 hours and an amplitude of 0.31 was measured by French amateur astronomer Raymond Poncy ().