value quality siderealorsynodic author ref method 3.1700 3- Synodic Stephens 2017MPBu...44..321S Lightcurve 3.1750 3- Synodic Behrend LCDB Lightcurve 3.1760 2+ Synodic Warner 2014MPBu...41..235W Lightcurve 3.1790 2+ Synodic Warner 2014MPBu...41..235W Lightcurve 53.1308 2 Synodic Pal 2020ApJS..247...26P Lightcurve 6.3515 2 Synodic Warner 2013MPBu...40...36W Lightcurve