value quality siderealorsynodic author ref method 8.9110 3 Synodic Stephens 2021MPBu...48..246S Lightcurve 8.9120 3 Synodic Stephens 2014MPBu...41....8S Lightcurve 8.9140 3 Synodic Stephens 2021MPBu...48..246S Lightcurve 8.9140 3 Synodic Stephens 2021MPBu...48..246S Lightcurve