value quality siderealorsynodic author ref method 3.9740 2 Synodic Alvarez 2004Icar..172..388A Lightcurve 4.0000 2 Synodic Aznar LCDB Lightcurve 6.8220 2 Synodic Behrend LCDB Lightcurve 6.8300 2 Synodic Behrend LCDB Lightcurve 7.9540 2 Synodic Bonamico 2020MPBu...47..222B Lightcurve 7.9571 2 Synodic Pal 2020ApJS..247...26P Lightcurve