value quality siderealorsynodic author ref method 3.0640 3- Synodic Benishek 2020MPBu...47...75B Lightcurve 3.0650 3 Synodic Stephens 2021MPBu...48..246S Lightcurve 3.0680 2 Synodic Erasmus 2020ApJS..247...13E Lightcurve 3.0681 2 Sidereal Durech 2020A&A...643A..59D Model