- There is also an asteroid called 1285 Julietta.
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[5] |
Volume | ~632,000 km³[5] |
Mass | ~5.6 × 1017 kg[5] |
Mean density | ~1.3 g/cm³ assumed[3] |
Equatorial surface gravity | ~0.016 m/s2[5] |
Escape velocity | ~0.040 km/s[5] |
Rotation period | synchronous[2] |
Axial tilt | zero[2] |
Albedo | 0.08 ± 0.01[6] |
Temperature | ~64 K[5] |
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Juliet (pronounced /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 1986-01-03, and was given the temporary designation S/1986 U 2.[7] It is named after the heroine of William Shakespeare's play Romeo and Juliet. It is also designated Uranus XI.[8]
Juliet belongs to Portia Group of satellites, which also includes Bianca, Cressida, Desdemona, Portia, Rosalind, Cupid, Belinda and Perdita.[6] These satellites have similar orbits and photometric properties.[6] Unfortunately, other than its orbit,[1] radius of 53 km[2] and geometric albedo of 0.08[6] virtually nothing is known about it.
At the Voyager 2 images Juliet appears as an elongated object, the major axis pointing towards Uranus. The ratio of axises of the 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.[9]
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