value quality siderealorsynodic author ref method 3.2616 3 Synodic Behrend LCDB Lightcurve 3.2619 2 Sidereal Durech 2023A&A...675A..24D Model 3.2619 2 Sidereal Hanus 2016A&A...586A.108H Model 3.2620 3 Synodic Bennefeld LCDB Lightcurve