Belinda (moon)

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Discovered byStephen P. Synnott / Voyager 2
Discovery dateJanuary 13, 1986
Avgdistance from the center of its orbital path75,255.613 ± 0.057 km[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
Measurements128 × 64 × 64 km[2]
Average radius45 ± 8 km[2]
Surface area~25,000 km²[3]
Volume~380,000 km³[3]
Mass~4.9×1017 kg[3]
Average density~1.3 g/cm³ assumed
Surface gravity~0.014 m/s2[3]
Escape velocity~0.034 km/s[3]
Rotation periodsynchronous[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]

References[change | change source]

  1. 1.0 1.1 1.2 1.3 Jacobson, R.A. (1998). "The Orbits of the Inner Uranian Satellites From Hubble Space Telescope and Voyager2 Observations". The Astronomical Journal 115: 1195-1199. doi:10.1086/300263. 
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Karkoschka, Erich (2001). "Voyager's Eleventh Discovery of a Satellite of Uranus and Photometry and the First Size Measurements of Nine Satellites". Icarus 151: 69–77. doi:10.1006/icar.2001.6597. 
  3. 3.0 3.1 3.2 3.3 3.4 3.5 Calculated on the basis of other parameters
  4. 4.0 4.1 4.2 4.3 Karkoschka, Erich (2001). "Comprehensive Photometry of the Rings and 16 Satellites of Uranus with the Hubble Space Telescope". Icarus 151: 51–68. doi:10.1006/icar.2001.6596. 
  5. 5.0 5.1 "Uranus's Moons". Sea and Sky. Retrieved 2010-12-17.
  6. Smith, B. A. (January 16, 1986). "IAU Circular No. 4164". Retrieved 2006-08-06.
  7. "Planet and Satellite Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology. July 21, 2006. Retrieved 2006-08-06.

Other websites[change | change source]