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Portia
Portia Moon

Moon of Uranus: Portia

Portia is the head member of the Portia group of moons of the planet Uranus. Portia's orbit is decaying due to tidal forces and will fall onto Uranus eventually.

For a listing of all moons, see Moons of the Planets.

Portia Facts
      1. Mass (kg)
      1. Radius (km)
      2. 55
      1. Density (gm/cm3)
      1. Distance from planet (km)
      2. 66,100
      1. Rotational period (days)
      1. Orbital period (days)
      2. 0.513196
      1. Orbital velocity (km/sec)
      2. 9.37
      1. Eccentricity of orbit
      2. 0.000
      1. Inclination of orbit (°)
      2. 0.09
      1. Albedo
      2. 0.07
      1. Magnitude (Vo)
      2. 21.0
      1. Atmosphere