value quality siderealorsynodic author ref method 14.3110 2+ Synodic Pravec LCDB Lightcurve 14.3158 2+ Synodic Pravec LCDB Lightcurve 29.0513 2 Synodic Pal 2020ApJS..247...26P Lightcurve 7.1600 2 Synodic Waszczak 2015AJ....150...75W Lightcurve