value quality siderealorsynodic author ref method 2.5900 1 Synodic Behrend LCDB Lightcurve 2.5900 1 Synodic Behrend LCDB Lightcurve 74.8600 2+ Synodic Molnar 2007MPBu...34..126M Lightcurve 74.9430 2 Sidereal Durech 2018A&A...617A..57D Model