value quality siderealorsynodic author ref method 5.8020 2 Synodic Clark 2011MPBu...38..187C Lightcurve 5.8030 2 Synodic Clark 2011MPBu...38..187C Lightcurve 9.9010 2 Synodic Clark 2008MPBu...35...42C Lightcurve