value quality siderealorsynodic author ref method 2.6358 3 Synodic Benishek 2021CBET.5083....1B Lightcurve 2.6358 3 Synodic Pravec LCDB Lightcurve 2.6358 3 Synodic Pravec LCDB Lightcurve 2.6400 2 Synodic Mas 2018MPBu...45...76M Lightcurve 22.7570 1+ Synodic Behrend LCDB Lightcurve 7.9350 2- Synodic Polakis 2020MPBu...47..314P Lightcurve