value quality siderealorsynodic author ref method 6.7070 3 Synodic Stephens 2014MPBu...41...92S Lightcurve 6.7078 3- Synodic Vaduvescu 2017EM&P..120...41V Lightcurve 6.7120 3 Synodic Warner 2014MPBu...41...41W Lightcurve