Cosmic Scale
Dwarf planets in order of size: Pluto, Eris, Ceres and more
Pluto is the largest known dwarf planet by size, though Eris is a little more massive. Ceres, in the asteroid belt, is the only dwarf planet in the inner Solar System.
See dwarf planets in 3D, at true scale
| # | Name | Diameter | × Earth |
|---|---|---|---|
| 1 | Ceres Dwarf planet | 939 km | 0.074 |
| 2 | Sedna Distant dwarf planet | 1,000 km | 0.079 |
| 3 | Quaoar Dwarf planet | 1,110 km | 0.087 |
| 4 | Gonggong Dwarf planet | 1,230 km | 0.097 |
| 5 | Makemake Dwarf planet | 1,430 km | 0.112 |
| 6 | Haumea Dwarf planet | 1,560 km | 0.122 |
| 7 | Eris Dwarf planet | 2,326 km | 0.183 |
| 8 | Pluto Dwarf planet | 2,377 km | 0.187 |
Dwarf planets
Pluto
Pluto was the ninth planet for 76 years, and is now the best-known dwarf planet.
Eris
Eris is slightly smaller than Pluto but noticeably heavier.
Haumea
Haumea is a dwarf planet beyond Neptune that spins so fast — once every 3.9 hours — that it has been stretched into an egg shape about twice as long as it is wide.
Makemake
Makemake is a bright, reddish world of methane ice in the Kuiper Belt, discovered shortly after Easter 2005 and nicknamed 'Easterbunny' before it was named after the creator god of Rapa Nui.
Gonggong
Gonggong is one of the largest dwarf planets, a reddish world of ice on a long, tilted orbit far beyond Neptune.
Quaoar
Quaoar is a dwarf planet in the Kuiper belt, about half the size of Pluto.
Sedna
Sedna is one of the most distant known worlds in the Solar System.
Ceres
Ceres is the largest object in the asteroid belt and the only dwarf planet inside Neptune's orbit.