There are five official dwarf planets in our solar system with another four objects that almost certainly are. There are 394 objects in the solar system that are possible dwarf planets including the five currently recognised.
The known dwarf planets are Ceres, Pluto, Haumea, Makemake and Eris. These bodies are each over appropriately 950 km in diameter.
All the dwarf planets are found in the Kuiper Belt with the exception of Ceres which is found in the asteroid belt.
No dwarf planets have been visited by space probes, though in 2015 NASA’s Dawn and New Horizons missions will reach Ceres and Pluto respectively.
Sizes of the Dwarf Planets
The Dwarf Planets
Name Distance from Sun Diameter at Equator Ceres 413,700,000 km (2.77 AU) 950 km Pluto 5,874,000,000 km (39.26 AU) 2,306 km Haumea 6,452,000,000 km (43.13 AU) 1,739 km Makemake 6,850,000,000 km (45.79 AU) 1,502 km Eris 10,120,000,000 km (68.01 AU) 2,326 km
Facts About Dwarf Planets
Click a dwarf planet below to find out more about it.