value quality siderealorsynodic author ref method 12.3800 2 Synodic Behrend LCDB Lightcurve 6.1700 1+ Synodic Riccioli 2001P&SS...49..657R Lightcurve 6.1700 2 Synodic Riccioli 2001P&SS...49..657R Lightcurve 6.1913 2 Sidereal Hanus 2016A&A...586A.108H Model 6.1930 3 Synodic Warner 2008MPBu...35...56W Lightcurve 6.2200 2 Synodic Binzel 1987Icar...72..135B Lightcurve