value quality siderealorsynodic author ref method 5.8570 2 Synodic Erasmus 2020ApJS..247...13E Lightcurve 5.8570 2 Sidereal Durech 2020A&A...643A..59D Model 5.8572 3 Synodic Owings 2013MPBu...40....8O Lightcurve