value quality siderealorsynodic author ref method 122.0000 2+ Synodic Stephens 2011MPBu...38..211S Lightcurve 124.6600 2 Sidereal Durech 2020A&A...643A..59D Model 132.6660 2 Synodic Pal 2020ApJS..247...26P Lightcurve