value quality siderealorsynodic author ref method 4.4720 2+ Synodic Clark 2014MPBu...41..100C Lightcurve 4.6700 2+ Synodic Behrend LCDB Lightcurve 4.6901 3 Synodic Pravec LCDB Lightcurve 4.6910 3- Synodic Stephens 2013MPBu...40..203S Lightcurve 4.6950 3 Synodic Stephens 2021MPBu...48..246S Lightcurve