value quality siderealorsynodic author ref method 4.3800 3 Synodic Stephens 2021MPBu...48...56S Lightcurve 4.3824 2 Sidereal Durech 2020A&A...643A..59D Model 4.3832 3 Synodic Odden 2012MPBu...39..236O Lightcurve