value quality siderealorsynodic author ref method 5.5000 2 Synodic Behrend LCDB Lightcurve 5.5600 3 Synodic Benishek 2020MPBu...47..231B Lightcurve 5.6150 3 Synodic Sheridan LCDB Lightcurve 5.6200 2 Synodic Waszczak 2015AJ....150...75W Lightcurve