Moon of Haumea
Hiʻiaka
Hiʻiaka is a moon. It orbits Haumea. It is about 320 km across – about as wide as Switzerland. Hiʻiaka is the larger and outer moon of Haumea, around 320 km across.
Fact file
- Type
- Moon of Haumea
- Diameter
- 320 km
- Distance from Haumea
- 49,880 km
- Orbital period
- 49.1 days
- Temperature
- -241 °C on average
Hiʻiaka orbits Haumea.
Interesting facts about Hiʻiaka
- Hiʻiaka is the larger and outer moon of Haumea, around 320 km across.
- Named after the Hawaiian patron goddess of the island of Hawaiʻi, a daughter of Haumea.
- Haumea also has a ring – discovered in 2017, when Haumea passed in front of a star.
Frequently asked questions about Hiʻiaka
How big is Hiʻiaka?
Hiʻiaka has a diameter of 320 km. That is about 9.2% of the diameter of our Moon.
How far is Hiʻiaka from Haumea?
Hiʻiaka orbits Haumea at an average distance of 49,880 km.
How long does Hiʻiaka take to orbit Haumea?
Hiʻiaka orbits Haumea once every 49.1 days.
How cold or warm is it on Hiʻiaka?
On Hiʻiaka the average temperature is −241 °C.
Formation
Like Namaka, probably a fragment from the collision that shaped Haumea.
Atmosphere
No atmosphere.
Exploration
Discovered in 2005 with the Keck telescope.
Compared with Earth
Its surface is almost pure, crystalline water ice.
Other moons of Haumea
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