value quality siderealorsynodic author ref method 11.0000 2 Synodic Behrend LCDB Lightcurve 11.2555 2 Sidereal Durech 2020A&A...643A..59D Model 11.2570 2 Synodic Erasmus 2020ApJS..247...13E Lightcurve 11.2600 3 Synodic Neugent 2008MPBu...35..116N Lightcurve