value quality siderealorsynodic author ref method 2.7544 3 Synodic Pilcher 2018MPBu...45..134P Lightcurve 2.7546 3 Synodic Pilcher 2018MPBu...45..134P Lightcurve 2.7547 2+ Synodic Behrend LCDB Lightcurve 3.9100 2 Synodic Aznar 2018MPBu...45...92A Lightcurve