Juliet (moon) facts for kids

Kids Encyclopedia Facts
Juliet
Discovery
Discovered by Stephen P. Synnott / Voyager 2
Discovery date January 3, 1986
Names
Orbit
Longest distance from the center of its orbital path
("semi-major axis")
64,358.222 ± 0.048 km
How long it takes to complete an orbit 0.493065490 ± 0.000000012 d
Angle above the reference plane
("inclination")
0.06546 ± 0.040° (to Uranus' equator)
What it orbits Uranus
Size and other qualities
Measurements 150 × 74 × 74 km
Average radius 53 ± 4 km
Surface area ~35,000 km²
Volume ~632,000 km³
Mass ~8.2×1017 kg
Average density ~1.3 g/cm³ assumed
Surface gravity ~0.016 m/s2
Escape velocity ~0.040 km/s
Rotation period 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
Uranus-Juliet-NASA
Discovery image of Juliet

Juliet is a closer moon to Uranus. It was found from the images taken by Voyager 2 on 1986-01-03, and was given the designation S/1986 U 2. It is named after the heroine of William Shakespeare's play Romeo and Juliet. It is also designated Uranus XI.

Juliet belongs to Portia Group of moons, which also includes Bianca, Cressida, Desdemona, Portia, Rosalind, Cupid, Belinda and Perdita. These moons have similar orbits and photometric properties. Unfortunately, other than its orbit, radius of 53 km and geometric albedo of 0.08 almost nothing is known about it.

At the Voyager 2 images Juliet appears as a stretched 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. Its surface is grey in color.


Juliet (moon) Facts for Kids. Kiddle Encyclopedia.