value quality siderealorsynodic author ref method 5.8900 3- Synodic Chang 2016ApJS..227...20C Lightcurve 5.8980 2 Synodic Erasmus 2020ApJS..247...13E Lightcurve 5.8992 2 Sidereal Durech 2020A&A...643A..59D Model 5.8992 2 Sidereal Durech 2023A&A...675A..24D Model