value quality siderealorsynodic author ref method 7.1020 2 Sidereal Durech 2020A&A...643A..59D Model 7.1020 2 Synodic Erasmus 2020ApJS..247...13E Lightcurve 7.1030 2 Synodic Waszczak 2015AJ....150...75W Lightcurve