value quality siderealorsynodic author ref method 31.3850 3 Synodic Cikota 2010MPBu...37Q.107C Lightcurve 31.4625 2 Sidereal Hanus 2016A&A...586A.108H Model 31.4660 3 Synodic Pilcher 2008MPBu...35...71P Lightcurve