value quality siderealorsynodic author ref method 1.5100 1 Synodic Behrend LCDB Lightcurve 2.9070 3- Synodic Polishook 2014MPBu...41...49P Lightcurve 2.9660 2 Synodic Pravec 2019Icar..333..429P Lightcurve