value quality siderealorsynodic author ref method 5.5900 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 5.5910 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 6.3280 2 Synodic Waszczak 2015AJ....150...75W Lightcurve