value quality siderealorsynodic author ref method 10.7421 2 Sidereal Durech 2023A&A...675A..24D Model 10.7440 2+ Synodic Dose 2020MPBu...47..324D Lightcurve 10.7530 3- Synodic Dose 2021MPBu...48..228D Lightcurve 8.7600 2 Synodic Behrend LCDB Lightcurve 8.8020 2 Synodic Gil 2003RMxAA..39...69G Lightcurve