value quality siderealorsynodic author ref method 2.5290 2 Synodic Stephens 2021MPBu...48...56S Lightcurve 2.6530 3- Synodic Dose 2020MPBu...47..324D Lightcurve 30.0000 1 Synodic Behrend LCDB Lightcurve 7.3000 0 Synodic Warner 2009MPBu...36....7W Lightcurve