value quality siderealorsynodic author ref method 38.5759 2 Synodic Pal 2020ApJS..247...26P Lightcurve 58.1200 3- Synodic Skiff LCDB Lightcurve 7.4400 1 Synodic Stephens 2002MPBu...29...72S Lightcurve 8.5060 2 Synodic Behrend LCDB Lightcurve