value quality siderealorsynodic author ref method 9.1270 2 Sidereal Durech 2019A&A...631A...2D Model 9.1271 2 Sidereal Durech 2023A&A...675A..24D Model 9.1280 2 Synodic Waszczak 2015AJ....150...75W Lightcurve