|
Discovery
|
|
|---|---|
| Discovered by | Stephen P. Synnott / Voyager 2 |
| Discovery date | January 3, 1986 |
| Semi-major axis | 64,358.222 ± 0.048 km[1] |
| Eccentricity | 0.00066 ± 0.000087[1] |
| Orbital period | 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] |
| Surface area | ~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] |
| Equatorial surface gravity | ~0.016 m/s2[lower-alpha 1] |
| Escape velocity | ~0.040 km/s[lower-alpha 1] |
| Rotation period | synchronous[2] |
| Axial tilt | zero[2] |
| Albedo | 0.08 ± 0.01[5] |
| Temperature | ~64 K[lower-alpha 1] |
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]
Explanatory notes
Citations
|
|||||||||||||||||||
|
|||||||||||||||||
