value quality siderealorsynodic author ref method 20.0000 2 Synodic Chang 2015ApJS..219...27C Lightcurve 233.3000 3- Synodic Brinsfield 2012MPBu...39...55B Lightcurve 233.7000 2 Sidereal Durech 2023A&A...675A..24D Model