value quality siderealorsynodic author ref method 36.4700 2+ Synodic Behrend LCDB Lightcurve 40.7117 2 Sidereal Durech 2020A&A...643A..59D Model 40.7141 2 Sidereal Durech 2018A&A...617A..57D Model 40.7300 2 Synodic Behrend LCDB Lightcurve 40.7300 3- Synodic Behrend LCDB Lightcurve 40.8000 3- Synodic Warner 2010MPBu...37..161W Lightcurve