December 2014 gave a tentative period of hours and a weak amplitude of magnitude (). A basically identical period of hours with a brightness variation of magnitude was determined by French amateur astronomer René Roy in February 2011 (). In March 2016, the Spanish group of asteroid observers, OBAS, measures a period of hours with an amplitude of magnitude (). Diameter and albedo According to the surveys carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the Infrared Astronomical Satellite IRAS, and the Japanese Akari satellite, Franzia measures (), () and () kilometers in diameter and its surface has an albedo of (), () and (), respectively. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.2700 and a diameter of 28.05 kilometers based on an absolute magnitude of 9.8. Notes 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 000862 Discoveries by Max Wolf Named minor planets 000862 19170128