value quality siderealorsynodic author ref method 3.0000 2 Synodic Szekely 2005P&SS...53..925S Lightcurve 7.8764 2 Sidereal Durech 2023A&A...675A..24D Model 7.8800 3 Synodic Stephens 2022MPBu...49..205S Lightcurve 7.8900 3- Synodic Benishek 2017MPBu...44...67B Lightcurve