value quality siderealorsynodic author ref method 5.3360 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 5.3400 2- Synodic Erasmus 2020ApJS..247...13E Lightcurve 5.3480 2 Synodic Waszczak 2015AJ....150...75W Lightcurve