value quality siderealorsynodic author ref method 12.0000 2 Synodic Yeh 2020AJ....160...73Y Lightcurve 15.9600 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 15.9631 2 Sidereal Durech 2023A&A...675A..24D Model