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Cordelia (moon)
| Discovery | |
|---|---|
| Discovered by | Richard J. Terrile / Voyager 2 |
| Discovery time | January 20, 1986 |
| Orbit | |
| Avg. distance from the center of its orbital path | 49751.722 ± 0.149 km |
| How egg-shaped its orbit is ("eccentricity") |
0.00026 ± 0.000096 |
| How long it takes to complete an orbit | 0.33503384 ± 0.00000058 d |
| Angle above the reference plane ("inclination") |
0.08479 ± 0.031° (to Uranus' equator) |
| What it orbits | Uranus |
| Size and Other Qualities | |
| Measures | 50 × 36 × 36 km |
| Average distance from its center to its surface | 21 ± 3 km |
| Area of its surface | ~5500 km² |
| Volume inside it | ~38,900 km³ |
| Mass | ~5.0×1016 kg |
| Average density | ~1.3 g/cm³ assumed |
| Gravity at its surface | ~0.0073 m/s² |
| Slowest speed able to escape into space ("escape velocity") |
~0.017 km/s |
| How long it takes to turn around one time | synchronous |
| Angle at which it turns (in relation to its orbit) |
zero |
| How much light it reflects | 0.08 ± 0.01 |
| Avg. surface temp. | ~64 K |
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Cordelia it the closest moon to Uranus. It was found from the images taken by Voyager 2 on January 20, 1986, and was given the designation S/1986 U 7. It was not seen again until the Hubble Space Telescope observed it in 1997. Cordelia takes its name from the youngest daughter of Lear in William Shakespeare's King Lear. It is also designated Uranus VI. This moon which is 14 km (9 mi) across is the same size of Deimos, Mars' smallest moon.
Other than its orbit, radius of 21 km and geometric albedo of 0.08, almost nothing is known about it. At the Voyager 2 images Cordelia appears as a stretched object, the major axis pointing towards Uranus.
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