value quality siderealorsynodic author ref method 221.6000 2 Sidereal Durech 2020A&A...643A..59D Model 223.5000 2 Synodic Warner 2015MPBu...42..172W Lightcurve 40.7000 1 Synodic Oey 2016MPBu...43...45O Lightcurve