value quality siderealorsynodic author ref method 4.4260 3 Synodic Drummond 1990Icar...83..349D Lightcurve 4.4260 2 Sidereal Kaasalainen 2004Icar..167..178K Model 4.4260 3 Synodic Cooney 2007MPBu...34...47C Lightcurve