Cosmic Scale
Haumea
Dwarf planet · About 50 AU from the Sun
How big is Haumea?
Haumea is about 1,560 km across.
See Haumea in 3D, at true scale
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. It has two moons and a ring.
At a glance
| Diameter | 1,560 km |
|---|---|
| Mass | 4.01 × 10²¹ kg |
| Diameter compared with Earth | 0.122 × Earth |
| Shape | About 2,100 × 1,700 × 1,000 km |
| Day | 3.9 hours |
| Orbit | 284 years |
| Moons | Hiʻiaka and Namaka |
Good to know
- It is the fastest-spinning large object in the Solar System.
- Its ring, found in 2017, was the first seen around a body beyond Neptune.
- It is named after the Hawaiian goddess of childbirth; its moons after her daughters.