value quality siderealorsynodic author ref method 6.7900 3 Synodic Warner 2010MPBu...37..161W Lightcurve 6.7950 3 Synodic Warner 2015MPBu...42..108W Lightcurve 6.8000 3- Synodic Warner 2015MPBu...42..267W Lightcurve 6.8060 3 Synodic Warner 2018MPBu...45..380W Lightcurve 6.8110 3- Synodic Warner 2012MPBu...39..158W Lightcurve