value quality siderealorsynodic author ref method 13.2900 3 Synodic Denchev 2000P&SS...48..987D Lightcurve 13.2900 3 Synodic Denchev LCDB Lightcurve 13.3080 3 Synodic Behrend LCDB Lightcurve 13.3120 2 Sidereal Hanus 2013A&A...551A..67H Model