value quality siderealorsynodic author ref method 4.8200 2 Synodic Chang 2015ApJS..219...27C Lightcurve 4.8215 2 Sidereal Durech 2023A&A...675A..24D Model 4.8260 2 Synodic Waszczak 2015AJ....150...75W Lightcurve