value quality siderealorsynodic author ref method 4.1760 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 4.1900 2 Synodic Chang 2015ApJS..219...27C Lightcurve 4.1920 2 Synodic Waszczak 2015AJ....150...75W Lightcurve