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Rosalind (moon)

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(Redirected from S/1986 U 4)
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 byStephen P. Synnott / Voyager 2
Discovery dateJanuary 13, 1986
Designations
Designation
Uranus XIII
Pronunciation/ˈrɒzələnd/[1]
AdjectivesRosalindian /rɒzəˈlɪndiən/[2]
Orbital characteristics[3]
69,926.795 ± 0.053 km
Eccentricity0.00011 ± 0.000103
0.558459529 ± 0.000000019 d
Inclination0.27876 ± 0.045° (to Uranus' equator)
Satellite ofUranus
Groupring shepherd
Physical characteristics
Dimensions72 × 72 × 72 km[4][note 1]
36 ± 6 km[5][6]
~16 000 km2[a]
Volume~200 000 km3[a]
Mass~(0.98–2.3)×1017 kg[a]
Mean density
0.5–1.2 g/cm3[7]
~0.005–0.012 m/s2[a]
~0.019–0.029 km/s[a]
synchronous[4]
zero[4]
Albedo0.08 ± 0.01[8]
Temperature~64 K[a]
  1. ^ Only two dimensions are known; the third dimension has been assumed to equal the other two.

Rosalind 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.[9] 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.[10]

Rosalind belongs to Portia group of satellites, which also includes Bianca, Cressida, Desdemona, Portia, Juliet, Cupid, Belinda, and Perdita.[8] These satellites have similar orbits and photometric properties.[8] Other than its orbit,[3] radius of 36 km,[4] and geometric albedo of 0.08,[8] virtually nothing is known about Rosalind.

In Voyager 2 imagery, Rosalind appears as an almost spherical object. The ratio of axes of Rosalind's prolate spheroid is 0.8–1.0.[4] Its surface is grey in color.[4]

Rosalind is very close to a 3:5 orbital resonance with Cordelia.[11]

See also

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Notes

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

References

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  1. ^ Benjamin Smith (1903). The Century Dictionary and Cyclopedia.
  2. ^ Bertrand Evans (1966). Teaching Shakespeare in the high school. p. 213.
  3. ^ a b 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. S2CID 118616209.
  4. ^ a b c d e f 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.
  5. ^ "Planetary Satellite Physical Parameters". JPL (Solar System Dynamics). 24 October 2008. Archived from the original on 1 November 2013. Retrieved 12 December 2008.
  6. ^ Williams, Dr. David R. (23 November 2007). "Uranian Satellite Fact Sheet". NASA (National Space Science Data Center). Retrieved 12 December 2008.
  7. ^ French, Robert S.; Showalter, Mark R. (August 2012). "Cupid is Doomed: An Analysis of the Stability of the Inner Uranian Satellites". Icarus. 220 (2): 911–921. arXiv:1408.2543. Bibcode:2012Icar..220..911F. doi:10.1016/j.icarus.2012.06.031.
  8. ^ 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.
  9. ^ Smith, B. A. (1986-01-16). "Satellites of Uranus". IAU Circular. 4164. Retrieved 2011-11-01.
  10. ^ "Planet and Satellite Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology. July 21, 2006. Retrieved 6 August 2006.
  11. ^ 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. S2CID 4320268.
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