value quality siderealorsynodic author ref method 10.9690 3- Synodic Ferrero 2011MPBu...38...92F Lightcurve 10.9740 2 Sidereal Durech 2020A&A...643A..59D Model 10.9745 2 Sidereal Durech 2023A&A...675A..24D Model 9.1000 1+ Synodic Aznar LCDB Lightcurve