(). In February 2016, Jean-Paul Godard and Frédéric Bergero also determined a period of hours and an amplitude of magnitude (). Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), Begonia measures , and kilometers in diameter, and its surface has an albedo of , and , respectively. The Collaborative Asteroid Lightcurve Link adopts the results from IRAS, that is, an albedo of 0.0456 and a diameter of 69.21 km based on an absolute magnitude of 9.77. Further published mean-diameters and albedos by the WISE team include , , and with corresponding albedos of , , and . An asteroid occultation on 25 March 2005, gave a best-fit ellipse dimension of 69.0 × 69.0 kilometers. These timed observations are taken when the asteroid passes in front of a distant star. However the quality of the measurement is poorly rated. 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 000943 Discoveries by Karl Wilhelm Reinmuth Named minor planets 000943 19201020