value quality siderealorsynodic author ref method 24.0000 2- Synodic Chang 2014ApJ...788...17C Lightcurve 34.9940 2 Synodic Erasmus 2020ApJS..247...13E Lightcurve 35.0290 2 Synodic Waszczak 2015AJ....150...75W Lightcurve