value quality siderealorsynodic author ref method 11.5982 2 Sidereal Durech 2023A&A...675A..24D Model 11.6000 2 Synodic Dotto 1992LIACo..30..211D Lightcurve 11.6050 3 Synodic Barucci 1994Icar..109..267B Lightcurve