value quality siderealorsynodic author ref method 15.9500 2 Synodic Mohamed 1995AJ....109.1877M Lightcurve 20.6200 3- Synodic Skiff LCDB Lightcurve 20.6250 3 Synodic Skiff 2019MPBu...46..238S Lightcurve 24.0000 1+ Synodic Behrend LCDB Lightcurve