value quality siderealorsynodic author ref method 14.7834 2 Sidereal Durech 2023A&A...675A..24D Model 14.7860 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 14.8020 3 Synodic Behrend LCDB Lightcurve 15.0000 2 Synodic Chang 2015ApJS..219...27C Lightcurve