value quality siderealorsynodic author ref method 33.5984 2 Sidereal Durech 2020A&A...643A..59D Model 33.5990 2 Sidereal Durech 2023A&A...675A..24D Model 33.6200 3- Synodic Ferrero 2011MPBu...38...93F Lightcurve 33.6205 3- Synodic Owings 2011MPBu...38..141O Lightcurve