The Portia (moon) reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Portia (moon)

Portia is a moon of Uranus. It was discovered in 1986 by Voyager 2. Very little is known about it. Since it is below Uranus' synchronous orbit radius, Portia's orbit is slowly decaying due to tidal forces and it will one day break up into a planetary ring or impact on Uranus' surface.

• Orbital radius: 66,097 km
• Diameter: 110 km
• Mass: Unknown
• Orbital period: 0.513196 days
• Albedo: 0.07
• Orbital inclination: 0.09°

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