value quality siderealorsynodic author ref method 2.4400 3 Synodic Pravec LCDB Lightcurve 2.4400 2 Synodic Pal 2020ApJS..247...26P Lightcurve 2.4400 2+ Synodic Higgins LCDB Lightcurve 2.4400 3 Synodic Pray 2008CBET.1233....1P Lightcurve