value quality siderealorsynodic author ref method 3.9750 3 Synodic Stephens 2007MPBu...34...31S Lightcurve 3.9754 2 Sidereal Durech 2020A&A...643A..59D Model 3.9754 2 Sidereal Durech 2023A&A...675A..24D Model 3.9755 3 Synodic Behrend LCDB Lightcurve 3.9755 2 Synodic Pal 2020ApJS..247...26P Lightcurve