Rosalind (moon)

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There is also an asteroid called 900 Rosalinde.
Rosalind
The Hubble Space Telescope captured tiny Rosalind orbiting Uranus in 1997
The Hubble Space Telescope captured tiny Rosalind orbiting Uranus in 1997
Discovery
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]
Orbital period 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]
Surface area ~16,000 km²[a]
Volume ~200,000 km³[a]
Mass ~2.5×1017 kg[a]
Mean density ~1.3 g/cm³ (assumed)[3]
Equatorial surface gravity ~0.012 m/s²[a]
Escape velocity ~0.031 km/s[a]
Rotation period synchronous[2]
Axial tilt zero[2]
Albedo 0.08 ± 0.01[5]
Temperature ~64 K[a]

Rosalind (/ˈrɒzəlɨnd/ 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]

References[edit]

Explanatory notes

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

Citations

  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.  edit
  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.  edit
  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.  edit
  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.  edit

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