value quality siderealorsynodic author ref method 6.8330 3 Synodic Belskaya 2003Icar..166..276B Lightcurve 6.8330 3 Synodic Farfan 2022MPBu...49..136F Lightcurve 6.8334 3 Synodic Behrend LCDB Lightcurve 6.8335 3 Synodic Shevchenko 2016P&SS..123..101S Lightcurve 6.8337 2 Sidereal Durech 2016A&A...587A..48D Model 6.8350 3 Synodic Harris 1983Icar...54...59H Lightcurve