value quality siderealorsynodic author ref method 5.3900 2 Synodic Bonamico 2020MPBu...47..222B Lightcurve 5.3925 3 Synodic Pravec LCDB Lightcurve 5.3970 3 Synodic Benishek 2020MPBu...47..231B Lightcurve 5.3970 3 Synodic Pravec LCDB Lightcurve