of their kind to be discovered, (15760) 1992 QB 1 , and are still in near primordial, low-eccentricity orbits. [69] Pluto and Charon Comparison of Eris , Pluto , Makemake , Haumea , Sedna , Orcus , 2007 OR 10 , Quaoar , and Earth (all to scale) Pluto (39 AU