value quality siderealorsynodic author ref method 4.5500 2 Synodic Behrend LCDB Lightcurve 6.6694 3 Synodic Behrend LCDB Lightcurve 6.6719 2 Sidereal Hanus 2016A&A...586A.108H Model 6.6719 3 Synodic Behrend LCDB Lightcurve 6.6720 3 Synodic Behrend LCDB Lightcurve 6.6721 2 Sidereal Durech 2023A&A...675A..24D Model