value quality siderealorsynodic author ref method 3.1370 2 Synodic Erasmus 2020ApJS..247...13E Lightcurve 3.2429 2 Sidereal Durech 2020A&A...643A..59D Model 3.2431 2 Synodic Pal 2020ApJS..247...26P Lightcurve