value quality siderealorsynodic author ref method 106.2880 2 Synodic Pal 2020ApJS..247...26P Lightcurve 109.0000 2 Synodic Stephens 2015MPBu...42...70S Lightcurve 16.7000 2 Synodic Warner 2010MPBu...37...57W Lightcurve 18.2900 2 Synodic Warner 2007MPBu...34....8W Lightcurve