value quality siderealorsynodic author ref method 5.5520 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 5.5700 3- Synodic Chang 2014ApJ...788...17C Lightcurve 5.5770 2 Synodic Erasmus 2020ApJS..247...13E Lightcurve