value quality siderealorsynodic author ref method 517.7480 2 Synodic Pal 2020ApJS..247...26P Lightcurve 519.5000 2 Sidereal Durech 2023A&A...675A..24D Model 537.8890 2 Synodic McNeill 2019ApJS..245...29M Lightcurve