value quality siderealorsynodic author ref method 7.5720 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 7.5839 2 Synodic Pal 2020ApJS..247...26P Lightcurve 7.5840 3 Synodic Higgins 2008MPBu...35...30H Lightcurve 7.5850 2 Sidereal Durech 2018A&A...617A..57D Model