value quality siderealorsynodic author ref method 12.3810 2 Synodic Behrend LCDB Lightcurve 12.6012 3 Synodic Behrend LCDB Lightcurve 12.6025 2 Sidereal Hanus 2013A&A...559A.134H Model 12.6050 2 Synodic Erasmus 2020ApJS..247...13E Lightcurve 12.6050 3 Synodic Stephens 2005MPBu...32...66S Lightcurve