value quality siderealorsynodic author ref method 4.0290 2 Synodic Erasmus 2020ApJS..247...13E Lightcurve 4.0293 2 Sidereal Durech 2020A&A...643A..59D Model 4.0294 3 Synodic Behrend LCDB Lightcurve 4.0301 3 Synodic Pravec LCDB Lightcurve