value quality siderealorsynodic author ref method 11.6797 2 Sidereal Durech 2020A&A...643A..59D Model 11.6800 3- Synodic Vander Haagen 2007MPBu...34...42V Lightcurve 11.6860 2 Synodic McNeill 2019ApJS..245...29M Lightcurve 5.8398 2 Synodic Pal 2020ApJS..247...26P Lightcurve