value quality siderealorsynodic author ref method 10.3900 2+ Synodic Chang 2019ApJS..241....6C Lightcurve 10.4180 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 10.4340 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 10.4800 2 Synodic Chang 2014ApJ...788...17C Lightcurve