value quality siderealorsynodic author ref method 5.2423 3 Synodic Owings 2012MPBu...39...22O Lightcurve 5.2425 2 Sidereal Durech 2020A&A...643A..59D Model 5.2427 2 Sidereal Durech 2018A&A...620A..91D Model 5.2430 3 Synodic Megna LCDB Lightcurve