value quality siderealorsynodic author ref method 3.3540 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 3.3557 2 Sidereal Durech 2018A&A...617A..57D Model 3.3557 2 Sidereal Durech 2020A&A...643A..59D Model 3.3560 2 Synodic Waszczak 2015AJ....150...75W Lightcurve