value quality siderealorsynodic author ref method 5.7800 2 Synodic Chang 2016ApJS..227...20C Lightcurve 5.7800 3- Synodic Colazo 2021MPBu...48...50C Lightcurve 5.7831 2 Sidereal Durech 2020A&A...643A..59D Model