value quality siderealorsynodic author ref method 13.7266 2 Synodic Pal 2020ApJS..247...26P Lightcurve 13.7285 2 Sidereal Durech 2019A&A...631A...2D Model 13.7286 2 Sidereal Durech 2018A&A...617A..57D Model 13.7420 2 Synodic McNeill 2019ApJS..245...29M Lightcurve