value quality siderealorsynodic author ref method 12.7630 2 Synodic Ferrero 2011MPBu...38...92F Lightcurve 12.7711 2 Sidereal Durech 2023A&A...675A..24D Model 13.7800 1+ Synodic Behrend LCDB Lightcurve 13.7800 2 Synodic Behrend LCDB Lightcurve