value quality siderealorsynodic author ref method 13.7000 2 Synodic Polishook 2012MNRAS.421.2094P Lightcurve 13.7060 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 13.7180 2 Synodic Waszczak 2015AJ....150...75W Lightcurve