value quality siderealorsynodic author ref method 16.1800 1 Synodic Behrend LCDB Lightcurve 97.8510 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 97.9440 2 Sidereal Durech 2020A&A...643A..59D Model 99.7000 3 Synodic Stephens 2008MPBu...35..126S Lightcurve