value quality siderealorsynodic author ref method 1.1300 Synodic Erasmus 2018ApJS..237...19E Lightcurve 1.1300 Synodic Erasmus 2019ApJS..242...15E Lightcurve 1072.0000 3 Synodic Pilcher 2017MPBu...44..270P Lightcurve 18.0000 1 Synodic Behrend LCDB Lightcurve