Haumea is a dwarf planet located beyond Neptune's orbit. It was discovered in 2004 by a team headed by Mike Brown of Caltech at the Palomar Observatory in the United States and independently in 2005,

Radius: 507 mi

Orbital period: 284 years

Discovered: December 28, 2004

Equatorial surface gravity: ≈0.401 m/s²

Moons: Namaka, Hi'iaka

Did you know: Two teams claim credit for the discovery of Haumea.