value quality siderealorsynodic author ref method 435.1930 2 Synodic Pal 2020ApJS..247...26P Lightcurve 437.3700 2+ Synodic Ferrero 2021MPBu...48..115F Lightcurve 452.3000 2 Sidereal Durech 2020A&A...643A..59D Model