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There is also an asteroid called 1285 Julietta.
Juliet
Discovery
Discovered by Stephen P. Synnott / Voyager 2
Discovery dateJanuary 3, 1986
Designations
Designation
Uranus XI
Pronunciation /ˈdʒuːliɛt/ [1]
AdjectivesJulietian [2]
Orbital characteristics [3]
64,358.222 ± 0.048 km
Eccentricity0.00066 ± 0.000087
0.493065490 ± 0.000000012 d
Inclination0.06546 ± 0.040° (to Uranus' equator)
Satellite of Uranus
Physical characteristics
Dimensions150 × 74 × 74 km [4] [note 1]
~30,000 km2 [a]
Volume430100±23.0% km3 [5]
Mass(3.871±0.891)×1017 kg [5]
Mean density
≥0.61 g/cm3 [5]
~0.90 g/cm3 (assumed)
~0.005–0.019 m/s2 [a]
~0.026–0.037 km/s [a]
synchronous [4]
zero [4]
Albedo0.08 ± 0.01 [6]
Temperature~64 K [a]
  1. ^ Only two dimensions are known; the third dimension has been assumed to equal the smaller known dimension.

Juliet is an inner satellite of Uranus. It was discovered from the images taken by Voyager 2 on 3 January 1986, and was given the temporary designation S/1986 U 2. [7] It is named after the heroine of William Shakespeare's play Romeo and Juliet. It is also designated Uranus XI. [8]

Juliet belongs to the Portia group of satellites, which also includes Bianca, Cressida, Desdemona, Portia, Rosalind, Cupid, Belinda and Perdita. [6] These satellites have similar orbits and photometric properties. [6] Other than its orbit, [3] size of 150 × 74 km [4] and geometric albedo of 0.08, [6] virtually nothing is known about Juliet.

In the Voyager 2 images Juliet appears as an elongated object, the major axis pointing towards Uranus. The ratio of axes of Juliet's prolate spheroid is 0.5 ± 0.3, which is rather an extreme value. [4] Its surface is grey in color. [4]

Juliet may collide with Desdemona within the next 100 million years. [9]

See also

Notes

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

References

  1. ^ Benjamin Smith (1903). The Century Dictionary and Cyclopedia.
  2. ^ W. M. Anderson (1892). "Daniel Johnson Brimm". Shield and Diamond. Vol. 2, no. 1. p. 116.
  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.
  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. ^ a b c French, Richard G.; Hedman, Matthew M.; Nicholson, Philip D.; Longaretti, Pierre-Yves; McGhee-French, Colleen A. (2024-03-15). "The Uranus system from occultation observations (1977–2006): Rings, pole direction, gravity field, and masses of Cressida, Cordelia, and Ophelia". Icarus. 411: 115957. arXiv: 2401.04634. doi: 10.1016/j.icarus.2024.115957. ISSN  0019-1035.
  6. ^ 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.
  7. ^ Smith, B. A. (January 16, 1986). "Satellites of Uranus". IAU Circular. 4164. Retrieved 29 October 2011.
  8. ^ "Planet and Satellite Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology. July 21, 2006. Retrieved 6 August 2006.
  9. ^ Duncan, Martin J.; Lissauer, Jack J. (1997). "Orbital Stability of the Uranian Satellite System". Icarus. 125 (1): 1–12. Bibcode: 1997Icar..125....1D. doi: 10.1006/icar.1996.5568.

External links

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