value quality siderealorsynodic author ref method 7.6530 2 Synodic Erasmus 2020ApJS..247...13E Lightcurve 7.6531 2 Sidereal Durech 2018A&A...620A..91D Model 7.6534 2 Sidereal Durech 2023A&A...675A..24D Model 7.6600 3- Synodic Chang 2014ApJ...788...17C Lightcurve 7.6720 2 Synodic Waszczak 2015AJ....150...75W Lightcurve