value quality siderealorsynodic author ref method 16.0610 2+ Synodic Strabla 2011MPBu...38..169S Lightcurve 16.0657 2 Sidereal Hanus 2016A&A...586A.108H Model 16.0750 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 16.1000 3 Synodic Ruthroff 2011MPBu...38...86R Lightcurve