timed observations are taken when the asteroid passes in front of a distant star. However the quality of the measurement is rated poorly. 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 000917 Discoveries by Grigory Neujmin Named minor planets 19150905