value quality siderealorsynodic author ref method 9.6585 2 Sidereal Hanus 2013A&A...559A.134H Model 9.6590 3 Synodic Galad 2009MPBu...36..183G Lightcurve 9.6600 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 9.6602 3 Synodic Pravec LCDB Lightcurve