Romilda was obtained from photometric observations over seven nights by Walter Cooney at the Blackberry Observatory in Louisiana. Lightcurve analysis gave a rotation period of hours with a brightness variation of magnitude (). In January 2006, Italian astronomers Roberto Crippa and Federico Manzini at the Sozzago Astronomical Station determined a nearly identical period of hours with an amplitude of magnitude (). Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), Romilda measures () and () kilometers in diameter, and its surface has an albedo of () and (), respectively. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous asteroid of 0.057 and calculates a diameter of 35.12 km based on an absolute magnitude of 11. Further published mean-diameters and albedos by the WISE team include (), (), (), and () with corresponding albedos of (), (), (), and (). References External links Lightcurve Database Query (LCDB), at www.minorplanet.info Dictionary of Minor Planet Names, Google books Asteroids and comets rotation curves, CdR – Geneva Observatory, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 000942 Discoveries by Karl Wilhelm Reinmuth Named minor planets 19201011