Haumea

Dwarf Planet

An oddly elongated dwarf planet that spins so fast it is shaped like a football, and has a thin ring.

Facts

TypeDwarf Planet
Distance from the Sun43.13 AU
Diameter1,632 km
Mass4.01 × 10²¹ kg
Surface gravity0.63 m/s²
Temperature-241°C
Moons2
RingsYes
Orbital period103,774 days
Rotation period3.92 hours
Apparent magnitude17.3
Redshift0
Discovered2004

Haumea in context

Dwarf planets are round for the same reason planets are, gravity, but share their orbit with other bodies a full planet would have swept aside or absorbed.

At 1,632 km across, Haumea is 13 percent of the diameter of Earth.

Its mass is less than a thousandth of the mass of Earth.

It keeps an average distance of 43.13 AU from the Sun, so sunlight takes 6.0 hours to reach it.

A single orbit takes 284 years.

An average temperature of 32 K works out at -241 degrees Celsius, colder than the 15 degrees Earth averages.

2 moons are known to orbit it.

It has been on record since 2004.

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