value quality siderealorsynodic author ref method 19.1000 2 Synodic Addleman 2005MPBu...32...76A Lightcurve 31.8220 2 Sidereal Durech 2023A&A...675A..24D Model 31.8222 2 Sidereal Durech 2020A&A...643A..59D Model 31.8226 2 Sidereal Durech 2018A&A...617A..57D Model