Andromeda
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Dwarf planet

Haumea

Open in OuranosCompare its size

Spins every four hours, stretched into an egg; it has a ring. Artist's impression: its surface hasn't been observed up close yet. This look is generated from many factors as a best guess at what it might look like, and will be updated as more data comes in.

Measured

Mean radius
780 km
From the Earth today
50.6 AU (7.56 billion km)

How far, from the Earth

50.6 AU. To cross it:

  • Light7 hours 1 minute
  • Voyager 1's speed14.2 years
  • Driving at 100 km/h8,630 years

Voyager 1 at the speed it moved outward over the year to 2026-10-25 (JPL Horizons). Driving: nonstop, never refuelling.

Moons (2 in Ouranos)

HiʻiakaNamaka

Where this comes from

  • Planets, Pluto, the Moon and Jupiter's big moons: astronomy-engine (Don Cross, MIT). Other moons: JPL Planetary Satellite Mean Elements. Ceres, Eris, Haumea, Makemake: JPL Small-Body Database. NASA/JPL-Caltech.

Every catalogue Ouranos draws is credited on the credits page.