value quality siderealorsynodic author ref method 3.8040 3 Synodic Vargas 2013MPBu...40...61V Lightcurve 3.8044 2 Sidereal Durech 2020A&A...643A..59D Model 3.8050 3 Synodic Benishek 2023MPBu...50...62B Lightcurve