value quality siderealorsynodic author ref method 5.8200 3 Synodic Stephens 2009MPBu...36...59S Lightcurve 5.8300 2+ Synodic Warner 2005MPBu...32...29W Lightcurve 5.8430 3 Synodic Benishek 2020MPBu...47..231B Lightcurve