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Belinda (moon)

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Discovered byStephen P. Synnott / Voyager 2
Discovery timeJanuary 13, 1986
Avgdistance from the center of its orbital path75,255.613 ± 0.057 km[1]
How egg-shaped its orbit is
0.00007 ± 0.000073[1]
How long it takes to complete an orbit0.623527470 ± 0.000000017 d[1]
Angle above the reference plane
0.03063 ± 0.028° (to Uranus' equator)[1]
What it orbitsUranus
Size and Other Qualities
Measures128 × 64 × 64 km[2]
Average distance from its center to its surface45 ± 8 km[2]
Area of its surface~25,000 km²[3]
Volume inside it~380,000 km³[3]
Mass~4.9×1017 kg[3]
Average density~1.3 g/cm³ assumed
Gravity at its surface~0.014 m/s2[3]
Slowest speed able to escape into space
("escape velocity")
~0.034 km/s[3]
How long it takes to turn around one timesynchronous[2]
Angle at which it turns
(in relation to its orbit)
How much light it reflects0.08 ± 0.01[4]
Avg. surface temp.~64 K[3]

Belinda is a closer moon to Uranus, a planet in the solar system. Belinda was found from the images taken by Voyager 2 on 1986,[5] and it was given the designation S/1986 U 5.[6] It is named after the heroine of Alexander Pope's The Rape of the Lock.[5] It is also designated Uranus XIV.[7]

Belinda belongs to Portia Group of moons, which also includes Bianca, Cressida, Desdemona, Portia, Juliet, Cupid, Rosalind and Perdita.[4] These moons have similar orbits and photometric properties.[4] Other than its orbit,[1] radius of 45 km[2] and geometric albedo of 0.08[4] almost nothing is known about it.

At the Voyager 2 images Belinda appears as a stretched object, the major axis pointing towards Uranus. The moon is very stretched, with its short axis 0.5 ± 0.1 times the long axis.[2] Its surface is grey in color.[2]


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