value quality siderealorsynodic author ref method 10.8177 2 Sidereal Durech 2019A&A...631A...2D Model 10.8180 3- Synodic Behrend LCDB Lightcurve 10.8180 3 Synodic Albers 2010MPBu...37..152A Lightcurve 10.8200 3 Synodic Carbo 2009MPBu...36..152C Lightcurve 10.8260 2 Synodic Waszczak 2015AJ....150...75W Lightcurve