Rosalind (moon)

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There is also an asteroid called 900 Rosalinde.
The Hubble Space Telescope captured tiny Rosalind orbiting Uranus in 1997
Discovered by Stephen P. Synnott / Voyager 2
Discovery date January 13, 1986
Orbital characteristics
Mean orbit radius
69,926.795 ± 0.053 km[1]
Eccentricity 0.00011 ± 0.000103[1]
0.558459529 ± 0.000000019 d[1]
Inclination 0.27876 ± 0.045° (to Uranus' equator)[1]
Satellite of Uranus
Physical characteristics
Dimensions 72 × 72 × 72 km[2]
Mean radius
36 ± 6 km[2][3][4]
~16,000 km²[a]
Volume ~200,000 km³[a]
Mass ~2.5×1017 kg[a]
Mean density
~1.3 g/cm³ (assumed)[3]
~0.012 m/s²[a]
~0.031 km/s[a]
Albedo 0.08 ± 0.01[5]
Temperature ~64 K[a]

Rosalind (/ˈrɒzəlɪnd/ ROZ-ə-lind) is an inner satellite of Uranus. It was discovered from the images taken by Voyager 2 on 13 January 1986, and was given the temporary designation S/1986 U 4.[6] It was named after the daughter of the banished Duke in William Shakespeare's play As You Like It. It is also designated Uranus XIII.[7]

Rosalind belongs to Portia group of satellites, which also includes Bianca, Cressida, Desdemona, Portia, Juliet, Cupid, Belinda and Perdita.[5] These satellites have similar orbits and photometric properties.[5] Other than its orbit,[1] radius of 36 km[2] and geometric albedo of 0.08[5] virtually nothing is known about Rosalind.

In the Voyager 2 images Rosalind appears as an almost spherical object. The ratio of axes of Rosalind's prolate spheroid is 0.8-1.0.[2] Its surface is grey in color.[2]

Rosalind is very close to a 3:5 orbital resonance with Cordelia.[8]

See also[edit]


Explanatory notes

  1. ^ a b c d e f Calculated on the basis of other parameters.


  1. ^ a b c d e Jacobson, R. A. (1998). "The Orbits of the Inner Uranian Satellites From Hubble Space Telescope and Voyager 2 Observations". The Astronomical Journal. 115 (3): 1195–1199. Bibcode:1998AJ....115.1195J. doi:10.1086/300263. 
  2. ^ a b c d e f g Karkoschka, Erich (2001). "Voyager's Eleventh Discovery of a Satellite of Uranus and Photometry and the First Size Measurements of Nine Satellites". Icarus. 151 (1): 69–77. Bibcode:2001Icar..151...69K. doi:10.1006/icar.2001.6597. 
  3. ^ a b "Planetary Satellite Physical Parameters". JPL (Solar System Dynamics). 24 October 2008. Retrieved 12 December 2008. 
  4. ^ Williams, Dr. David R. (23 November 2007). "Uranian Satellite Fact Sheet". NASA (National Space Science Data Center). Retrieved 12 December 2008. 
  5. ^ a b c d Karkoschka, Erich (2001). "Comprehensive Photometry of the Rings and 16 Satellites of Uranus with the Hubble Space Telescope". Icarus. 151 (1): 51–68. Bibcode:2001Icar..151...51K. doi:10.1006/icar.2001.6596. 
  6. ^ Smith, B. A. (1986-01-16). "Satellites of Uranus". IAU Circular. 4164. Retrieved 2011-11-01. 
  7. ^ "Planet and Satellite Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology. July 21, 2006. Retrieved 6 August 2006. 
  8. ^ Murray, Carl D.; Thompson, Robert P. (1990-12-06). "Orbits of shepherd satellites deduced from the structure of the rings of Uranus". Nature. 348 (6301): 499–502. Bibcode:1990Natur.348..499M. doi:10.1038/348499a0. ISSN 0028-0836. 

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