value quality siderealorsynodic author ref method 5.2063 2 Sidereal Durech 2019A&A...631A...2D Model 5.2063 2 Sidereal Durech 2023A&A...675A..24D Model 5.2068 3 Synodic Behrend LCDB Lightcurve 5.2080 2 Synodic Waszczak 2015AJ....150...75W Lightcurve