value quality siderealorsynodic author ref method 5.4915 3- Synodic Lang 2018MPBu...45..197L Lightcurve 5.4915 3 Synodic Benishek 2018MPBu...45..187B Lightcurve 5.4920 3 Synodic Marchini 2018MPBu...45..195M Lightcurve