value quality siderealorsynodic author ref method 3.7200 2 Synodic Yeh 2020AJ....160...73Y Lightcurve 3.7400 2 Synodic Chang 2015ApJS..219...27C Lightcurve 3.7600 2 Synodic Waszczak 2015AJ....150...75W Lightcurve