value quality siderealorsynodic author ref method 10.1210 3- Synodic Carbo 2009MPBu...36..152C Lightcurve 10.1230 3 Synodic Brinsfield 2009MPBu...36..127B Lightcurve 10.1281 2 Sidereal Durech 2020A&A...643A..59D Model