Known Dwarf Planets
The first five recognized dwarf planets are Ceres, Pluto, Eris, Makemake and Haumea. Scientists believe there may be dozens or even more than 100 dwarf planets awaiting discovery.
Eris: This is the largest dwarf planet, which is only slightly bigger than Pluto, The diameter of Eris is 2,326 kms. This was discovered in the year 2003. The average distance of the Eris orbit is 68 times the Earth’s distance from the sun and it takes 561.4 Earth years to orbit the sun.
The duration of the day on Eris is 1.9 hours more than that of the Earth. This dwarf planet Eris has Dysnomia, as its only moon.
Pluto: This dwarf planet was discovered in 1930. The average distance of Pluto's orbit is nearly 40 times that of the Earth's distance from the Sun. It takes 248 (approximately) Earth years to orbit the Sun completely. This dwarf planet has five known moons: Charon, Nix, Hydra and two more were recently discovered which are not named yet. This dwarf planet revolves around the sun in an elliptical orbit which is at an angle of 17o with the plane of other planets.