Juliet (moon)
- There is also an asteroid called 1285 Julietta.
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|
| Discovery | |
|---|---|
| Discovered by | Stephen P. Synnott / Voyager 2 |
| Discovery date | January 3, 1986 |
| Orbital characteristics | |
| 64,358.222 ± 0.048 km[1] | |
| Eccentricity | 0.00066 ± 0.000087[1] |
| 0.493065490 ± 0.000000012 d[1] | |
| Inclination | 0.06546 ± 0.040° (to Uranus' equator)[1] |
| Satellite of | Uranus |
| Physical characteristics | |
| Dimensions | 150 × 74 × 74 km[2] |
|
Mean radius
|
46.8 ± 4 km[2][3][4] |
| ~35,000 km²[lower-alpha 1] | |
| Volume | ~632,000 km³[lower-alpha 1] |
| Mass | ~5.6×1017 kg[lower-alpha 1] |
|
Mean density
|
~1.3 g/cm³ (assumed)[3] |
| ~0.016 m/s2[lower-alpha 1] | |
| ~0.040 km/s[lower-alpha 1] | |
| synchronous[2] | |
| zero[2] | |
| Albedo | 0.08 ± 0.01[5] |
| Temperature | ~64 K[lower-alpha 1] |
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Juliet (/ˈdʒuːliət/ JEW-lee-ət or /ˌdʒuːliˈɛt/ JEW-lee-ET) is an inner satellite of Uranus. It was discovered from the images taken by Voyager 2 on 3 January 1986, and was given the temporary designation S/1986 U 2.[6] It is named after the heroine of William Shakespeare's play Romeo and Juliet. It is also designated Uranus XI.[7]
Juliet belongs to Portia Group of satellites, which also includes Bianca, Cressida, Desdemona, Portia, Rosalind, Cupid, Belinda and Perdita.[5] These satellites have similar orbits and photometric properties.[5] Unfortunately, other than its orbit,[1] radius of 53 km[2] and geometric albedo of 0.08[5] virtually nothing is known about Juliet.
At the Voyager 2 images Juliet appears as an elongated object, the major axis pointing towards Uranus. The ratio of axes of Juliet's prolate spheroid is 0.5 ± 0.3, which is rather an extreme value.[2] Its surface is grey in color.[2]
Juliet may collide with Desdemona within the next 100 million years.[8]
See also
References
Explanatory notes
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- Juliet Profile by NASA's Solar System Exploration
- Juliet + Ring diagram (Courtesy of Astronomy Magazine 2005)
- Uranus' Known Satellites (by Scott S. Sheppard)
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