value quality siderealorsynodic author ref method 2.6498 3 Synodic Benishek 2022CBET.5189....1B Lightcurve 2.6500 2 Synodic Dose 2023MPBu...50...65D Lightcurve 2.6500 3 Synodic Farfan LCDB Lightcurve