value quality siderealorsynodic author ref method 2.4924 2 Synodic Galad 2004CoSka..34..157G Lightcurve 2.4924 3 Synodic Pravec 2003IAUC.8216....3P Lightcurve 2.4924 3 Synodic Pravec 2006Icar..181...63P Lightcurve