value quality siderealorsynodic author ref method 6.7600 2 Synodic Garceran LCDB Lightcurve 6.9700 2 Synodic Behrend LCDB Lightcurve 7.7480 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 7.7481 2 Sidereal Durech 2020A&A...643A..59D Model 7.7500 3 Synodic Benishek 2014MPBu...41..126B Lightcurve