value quality siderealorsynodic author ref method 2.5825 3 Synodic Pravec LCDB Lightcurve 2.5827 3 Synodic Stephens 2018MPBu...45..353S Lightcurve 2.5880 2 Synodic Skiff 2023MPBu...50...74S Lightcurve 2.5920 3- Synodic Skiff LCDB Lightcurve