value quality siderealorsynodic author ref method 5.2880 2 Sidereal Hanus 2011A&A...530A.134H Model 5.2896 3 Synodic Behrend LCDB Lightcurve 5.2896 3 Synodic Stoss 2006MPBu...33...33S Lightcurve 5.2900 3 Synodic Stephens 2015MPBu...42...70S Lightcurve