Ophelia (moon)

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Discovered byRichard J. Terrile / Voyager 2
Discovery dateJanuary 20, 1986
Avgdistance from the center of its orbital path53,763.390 ± 0.847 km
How long it takes to complete an orbit0.37640039 ± 0.00000357 d
Angle above the reference plane
0.10362 ± 0.055° (to Uranus' equator)
What it orbitsUranus
Size and other qualities
Measurements54 × 38 × 38 km
Average radius23 ± 4 km
Surface area~6600 km²
Volume~41,000 km³
Mass~5.1×1016 kg
Average density~1.3 g/cm³ assumed
Surface gravity~0.0070 m/s2
Escape velocity~0.018 km/s
Rotation periodsynchronous
Angle at which it turns
(in relation to its orbit)
How much light it reflects0.08 ± 0.01
Avg. surface temp.~64 K
Discovery image of Ophelia

Ophelia is a closer moon of Uranus. It was found from the images taken by Voyager 2 on January 20, 1986, and was given the designation S/1986 U 8. It was not seen until the Hubble Space Telescope saw it in 2003.

Ophelia was named after the daughter of Polonius, Ophelia, in William Shakespeare's play Hamlet. It is also designated Uranus VII.

Unfortunately, other than its orbit, radius of 23 km and geometric albedo of 0.08, almost nothing is known about it. At the Voyager 2 images Ophelia appears as a streched object, the major axis pointing towards Uranus.

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