value quality siderealorsynodic author ref method 5.2210 2- Synodic Stephens 2021MPBu...48..246S Lightcurve 5.2220 2 Synodic Stephens 2021MPBu...48..246S Lightcurve 5.2270 3 Synodic Coley LCDB Lightcurve 5.2280 3 Synodic Stephens 2021MPBu...48..246S Lightcurve