value quality siderealorsynodic author ref method 5.9440 2 Synodic Behrend LCDB Lightcurve 5.9473 2+ Synodic Behrend LCDB Lightcurve 5.9482 2 Sidereal Hanus 2013A&A...551A..67H Model 5.9500 2 Synodic Binzel 1987Icar...72..135B Lightcurve 5.9500 2+ Synodic Colazo 2021MPBu...48...50C Lightcurve