value quality siderealorsynodic author ref method 16.5430 3- Synodic Warner 2018MPBu...45..147W Lightcurve 17.5500 2+ Synodic Warner 2017MPBu...44..130W Lightcurve 25.3000 2 Synodic Dahlgren 1998Icar..133..247D Lightcurve 25.3050 2 Sidereal Hanus 2013A&A...551A..67H Model