value quality siderealorsynodic author ref method 19.1010 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 31.7160 2 Sidereal Durech 2018A&A...620A..91D Model 31.7210 2 Sidereal Durech 2023A&A...675A..24D Model 31.7224 2 Sidereal Durech 2019A&A...631A...2D Model