value quality siderealorsynodic author ref method 3.8700 1 Synodic Chang 2016ApJS..227...20C Lightcurve 7.7710 3 Synodic Menke 2005MPBu...32...85M Lightcurve 7.7712 2 Synodic CALL LCDB Lightcurve 7.7900 2- Synodic Behrend LCDB Lightcurve