Ophelia (moon)
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| Discovery | |
|---|---|
| Discovered by: | Richard J. Terrile / Voyager 2 |
| Discovery date: | January 20, 1986 |
| Orbital characteristics | |
| Mean radius of orbit: | 53,763.390 ± 0.847 km |
| Eccentricity: | 0.00992 ± 0.000107 |
| Orbital period: | 0.37640039 ± 0.00000357 d |
| Inclination: | 0.10362 ± 0.055° (to Uranus' equator) |
| Satellite of: | Uranus |
| Physical characteristics | |
| Dimensions: | 54 × 38 × 38 km |
| Mean radius: | 23 ± 4 km |
| Surface area: | ~6600 km² |
| Volume: | ~41,000 km³ |
| Mass: | ~5.1×1016 kg |
| Mean density: | ~1.3 g/cm³ assumed |
| Equatorial surface gravity: | ~0.0070 m/s2 |
| Escape velocity: | ~0.018 km/s |
| Rotation period: | synchronous |
| Axial tilt: | zero |
| Albedo: | 0.08 ± 0.01 |
| Temperature: | ~64 K |
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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| Moons | Ariel ·Belinda ·Bianca ·Caliban ·Cordelia ·Cressida ·Cupid ·Desdemona ·Ferdinand ·Francisco ·Juliet ·Mab ·Margaret ·Miranda ·Oberon ·Ophelia ·Perdita ·Portia ·Prospero ·Puck ·Rosalind ·Setebos ·Stephano ·Sycorax ·Titania ·Trinculo ·Umbriel Other: Arieal features ·Miranda features ·Oberon features ·Titania features ·Puck Craters ·Umbriel craters · Miranda's Verona Rupes ·Umbriel Crater Wunda |
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| Characteristics | Atmosphere ·Rings of Uranus | |
| Discovery | William Herschel ·William Lassell | |
| Exploration | Voyager program ·Voyager 2 | |
| Other | 15 Orionis ·Uranus-crosser asteroid ·In fiction | |
