value quality siderealorsynodic author ref method 7.4490 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 7.4500 2 Synodic Chang 2019ApJS..241....6C Lightcurve 7.4590 2 Synodic Waszczak 2015AJ....150...75W Lightcurve