value quality siderealorsynodic author ref method 16.5450 2 Synodic Barucci 1992AJ....103.1679B Lightcurve 16.5500 2 Synodic Yeh 2020AJ....160...73Y Lightcurve 26.3000 2 Synodic Behrend LCDB Lightcurve 33.1280 3 Synodic Pilcher 2016MPBu...43..135P Lightcurve 33.1291 2 Sidereal Durech 2020A&A...643A..59D Model