Dwarf planet

Eris

https://starchild.gsfc.nasa.gov/docs/StarChild/solar_system_level2/eris.html

Eris is the largest dwarf planet. Eris has one moon and its orbit takes 557 years. The diameter of Eris is 2400 km. It is slightly larger than Pluto. Eris has made scientists believe that it has frozen methane on its surface. Eris orbit distance is 10,120,000,000,km.