value quality siderealorsynodic author ref method 17.6300 1 Synodic Binzel 1987Icar...72..135B Lightcurve 24.5497 2 Sidereal Durech 2020A&A...643A..59D Model 24.6000 3- Synodic Warner 2008MPBu...35...95W Lightcurve 49.0823 2 Synodic Pal 2020ApJS..247...26P Lightcurve