value quality siderealorsynodic author ref method 3.7114 2 Sidereal Durech 2018A&A...617A..57D Model 3.7114 2 Synodic Pal 2020ApJS..247...26P Lightcurve 3.7120 2- Synodic Erasmus 2020ApJS..247...13E Lightcurve