value quality siderealorsynodic author ref method 109.8700 3- Synodic Stephens 2009MPBu...36...59S Lightcurve 110.0270 2 Sidereal Martikainen 2021A&A...649A..98M Model 110.0280 2 Sidereal Hanus 2016A&A...586A.108H Model 6.0000 1 Synodic Ruthroff 2009MPBu...36..121R Lightcurve 6.4200 1 Synodic Behrend LCDB Lightcurve 6.4200 1 Synodic Binzel 1987Icar...72..135B Lightcurve 8.0000 2- Synodic Ford 2009MPBu...36...77F Lightcurve