value quality siderealorsynodic author ref method 3.5550 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 3.5550 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 3.5600 2 Synodic Chang 2015ApJS..219...27C Lightcurve