value quality siderealorsynodic author ref method 7.0840 2 Synodic McNeill 2019ApJS..245...29M Lightcurve 7.0862 2 Synodic Pal 2020ApJS..247...26P Lightcurve 7.0870 2 Synodic Waszczak 2015AJ....150...75W Lightcurve