Rosalind (moon)

moon of Uranus

Rosalind is a closer moon to Uranus. It was found from the images taken by Voyager 2 on January 13, 1986, and was given the designation S/1986 U 4.[5] 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.[6]

Rosalind
Discovery
Discovered byStephen P. Synnott / Voyager 2
Discovery dateJanuary 13, 1986
Orbital characteristics
Mean orbit radius
69,926.795 ± 0.053 km[1]
Eccentricity0.00011 ± 0.000103[1]
0.558459529 ± 0.000000019 d[1]
Inclination0.27876 ± 0.045° (to Uranus' equator)[1]
Satellite ofUranus
Physical characteristics
Dimensions72 × 72 × 72 km[2]
Mean radius
36 ± 6 km[2]
~16,000 km²[3]
Volume~200,000 km³[3]
Mass~2.5×1017 kg[3]
Mean density
~1.3 g/cm³ assumed
~0.012 m/s2[3]
~0.031 km/s[3]
synchronous[2]
zero[2]
Albedo0.08 ± 0.01[4]
Temperature~64 K[3]

Rosalind belongs to Portia Group of moons, which also includes Bianca, Cressida, Desdemona, Portia, Juliet, Cupid, Belinda and Perdita.[4] These moons have similar orbits and photometric properties.[4] Unfortunately, other than its orbit,[1] radius of 36 km[2] and geometric albedo of 0.08[4] almost nothing is known about it.

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

ReferencesEdit

  1. 1.0 1.1 1.2 1.3 1.4 Jacobson, R.A. (1998). "The Orbits of the Inner Uranian Satellites From Hubble Space Telescope and Voyager2 Observations". The Astronomical Journal. 115 (3): 1195–1199. Bibcode:1998AJ....115.1195J. 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 (1): 69–77. Bibcode:2001Icar..151...69K. 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 (1): 51–68. Bibcode:2001Icar..151...51K. doi:10.1006/icar.2001.6596.
  5. Smith, B. A. (January 16, 1986). "IAU Circular No. 4164". Retrieved 2006-08-06.
  6. "Planet and Satellite Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology. July 21, 2006. Retrieved 2006-08-06.

Other websitesEdit