value quality siderealorsynodic author ref method 4.4100 2 Synodic Chang 2019ApJS..241....6C Lightcurve 4.4140 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 4.8600 2 Synodic Waszczak 2015AJ....150...75W Lightcurve