value quality siderealorsynodic author ref method 8.4855 3 Synodic Oey 2017MPBu...44..193O Lightcurve 8.4872 2 Sidereal Durech 2020A&A...643A..59D Model 8.4877 3 Synodic Pravec LCDB Lightcurve 8.4880 2 Synodic Pravec 2005IAUC.8609....2P Lightcurve