value quality siderealorsynodic author ref method 13.9400 2 Synodic Polakis 2020MPBu...47..177P Lightcurve 14.0130 2 Synodic Polakis 2019MPBu...46..132P Lightcurve 8.1830 3- Synodic Behrend LCDB Lightcurve 8.1900 2 Synodic Behrend LCDB Lightcurve