Haumea

Discovered 2004-12-28 by Mike Brown / José Luis Ortiz Moreno. Extremely fast rotation gives it an oblate ellipsoid shape

Mean Radius

620 km

Gravity

0.401 m/s²

Orbital Period

103410.0 d

Distance

43.135 AU

Temperature

32 K

Physical Properties

Mean Radius620 km

Mass4.0060 × 10^21 kg

Surface Gravity0.401 m/s²

Density2.018 g/cm³

Escape Velocity0.90 km/s

Mean Temperature32 K (-241°C)

Axial Tilt126°

Rotation Period3.92 h

AtmosphereNone

Ring SystemYes

Orbital Elements (J2000)

Semi-major Axis43.135200 AU

Eccentricity0.19126000

Inclination28.21370°

Asc. Node (Ω)121.90000°

Arg. Perihelion (ω)239.04100°

Mean Anomaly (M₀)218.20500°

Orbital Period103410.000 days

Perihelion34.897 AU

Aphelion51.541 AU