value quality siderealorsynodic author ref method 6.2450 2 Synodic McNeill 2019ApJS..245...29M Lightcurve 6.2480 2+ Synodic Alkema 2013MPBu...40..133A Lightcurve 6.2490 3 Synodic Benishek 2021MPBu...48...77B Lightcurve 6.2492 2 Synodic Pal 2020ApJS..247...26P Lightcurve 6.2520 3 Synodic Benishek LCDB Lightcurve