value quality siderealorsynodic author ref method 13.4670 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 13.4680 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 13.4688 2 Sidereal Durech 2020A&A...643A..59D Model