value quality siderealorsynodic author ref method 36.8942 2 Sidereal Durech 2018A&A...617A..57D Model 36.9290 3 Synodic Warner 2011MPBu...38...82W Lightcurve 36.9410 2 Synodic Waszczak 2015AJ....150...75W Lightcurve