Rosalind (moon)
- There is also an asteroid called 900 Rosalinde.
The Hubble Space Telescope captured tiny Rosalind orbiting Uranus in 1997
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Discovery
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| Discovered by | Stephen P. Synnott / Voyager 2 |
| Discovery date | January 13, 1986 |
| 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 |
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Physical characteristics
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| 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]
[edit] See also
[edit] References
Explanatory notes
Citations
- ^ 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.
- ^ 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.
- ^ a b "Planetary Satellite Physical Parameters". JPL (Solar System Dynamics). 24 October 2008. http://ssd.jpl.nasa.gov/?sat_phys_par. Retrieved 12 December 2008.
- ^ Williams, Dr. David R. (23 November 2007). "Uranian Satellite Fact Sheet". NASA (National Space Science Data Center). http://nssdc.gsfc.nasa.gov/planetary/factsheet/uraniansatfact.html. Retrieved 12 December 2008.
- ^ a b c d Karkoschka, E. (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.
- ^ Smith, B. A. (1986-01-16). "Satellites of Uranus". IAU Circular 4164. http://www.cbat.eps.harvard.edu/iauc/04100/04164.html#Item1. Retrieved 2011-11-01.
- ^ "Planet and Satellite Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology. July 21, 2006. http://planetarynames.wr.usgs.gov/append7.html. Retrieved 6 August 2006.
- ^ Murray, C. D.; Thompson, R. P. (1990-12-06). "Orbits of shepherd satellites deduced from the structure of the rings of Uranus". Nature 348: 499 - 502. Bibcode 1990Natur.348..499M. doi:10.1038/348499a0. http://www.nature.com/nature/journal/v348/n6301/abs/348499a0.html. Retrieved 2012-02-20.
[edit] External links
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