Moons of Haumea
The moons were formed billions of years ago after something crashed into Haumea and broke apart its layer of ice. Hiʻiaka, which is about  in diameter, is the larger of the two moons, and it is farther away from the planet. It has large amounts of ice on its surface. Namaka, which is only one-tenth the size, has a strange orbit, affected by the larger moon.