value quality siderealorsynodic author ref method 5.6960 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 5.6970 2- Synodic Erasmus 2020ApJS..247...13E Lightcurve 5.7022 2 Synodic Pal 2020ApJS..247...26P Lightcurve