value quality siderealorsynodic author ref method 3.5549 2 Synodic Pravec LCDB Lightcurve 3.5558 3 Synodic Pravec LCDB Lightcurve 3.5920 2- Synodic Warner 2016MPBu...43...66W Lightcurve 3.6700 2- Synodic Skiff 2019MPBu...46..458S Lightcurve