value quality siderealorsynodic author ref method 52.2240 2 Synodic Erasmus 2020ApJS..247...13E Lightcurve 52.2800 2 Sidereal Durech 2020A&A...643A..59D Model 563.5790 2 Synodic Pal 2020ApJS..247...26P Lightcurve