value quality siderealorsynodic author ref method 10.7734 2 Sidereal Durech 2019A&A...631A...2D Model 10.7735 2 Sidereal Durech 2018A&A...620A..91D Model 10.7735 2 Sidereal Durech 2023A&A...675A..24D Model 10.7740 3 Synodic Odden 2018MPBu...45..401O Lightcurve