value quality siderealorsynodic author ref method 16.5453 2 Synodic Pal 2020ApJS..247...26P Lightcurve 16.5600 2 Synodic Behrend LCDB Lightcurve 8.2788 3- Synodic Brincat 2023MPBu...50...54B Lightcurve 8.2792 2 Sidereal Durech 2020A&A...643A..59D Model