value quality siderealorsynodic author ref method 8.8600 2+ Synodic Behrend LCDB Lightcurve 8.8610 3 Synodic Behrend LCDB Lightcurve 8.8698 2 Sidereal Hanus 2013A&A...551A..67H Model 8.8700 3 Synodic Warner 2008MPBu...35...56W Lightcurve 8.8716 3 Synodic Behrend LCDB Lightcurve