value quality siderealorsynodic author ref method 5.2810 3 Synodic Behrend LCDB Lightcurve 5.2819 2 Sidereal Durech 2023A&A...675A..24D Model 5.2820 3 Synodic Durkee 2010MPBu...37..125D Lightcurve 5.2872 3 Synodic Behrend LCDB Lightcurve