value quality siderealorsynodic author ref method 5.4900 2 Synodic Chang 2015ApJS..219...27C Lightcurve 5.4963 2 Sidereal Durech 2023A&A...675A..24D Model 5.4963 2 Sidereal Durech 2018A&A...617A..57D Model 5.5180 2 Synodic Waszczak 2015AJ....150...75W Lightcurve