value quality siderealorsynodic author ref method 37.6870 2 Synodic Pal 2020ApJS..247...26P Lightcurve 37.7340 2 Sidereal Durech 2023A&A...675A..24D Model 56.5880 2 Sidereal Hanus 2013A&A...551A..67H Model 59.2000 2 Synodic Stephens 2002MPBu...29...47S Lightcurve