value quality siderealorsynodic author ref method 2.6040 3 Synodic Benishek 2022MPBu...49..333B Lightcurve 9.0000 2 Synodic Wisniewski 1997Icar..126..395W Lightcurve 9.2736 2 Sidereal Durech 2020A&A...643A..59D Model 9.2741 3 Synodic Skiff 2023MPBu...50...74S Lightcurve