value quality siderealorsynodic author ref method 3.8100 2 Synodic Pal 2020ApJS..247...26P Lightcurve 3.8104 2 Sidereal Durech 2020A&A...643A..59D Model 3.8110 3 Synodic Ditteon 2010MPBu...37....1D Lightcurve