value quality siderealorsynodic author ref method 5.1942 2 Synodic Pal 2020ApJS..247...26P Lightcurve 5.2070 3- Synodic Stephens 2016MPBu...43..252S Lightcurve 5.8080 2+ Synodic Stephens 2016MPBu...43..252S Lightcurve 7.7950 2 Synodic Warner 2013MPBu...40..137W Lightcurve