Juliet (moon)

Last updated
Juliet
Julietmoon.png
Discovery
Discovered by Stephen P. Synnott / Voyager 2
Discovery dateJanuary 3, 1986
Designations
Designation
Uranus XI
Pronunciation /ˈdʒuːliɛt/ [1]
Adjectives Julietian [2] [3]
Orbital characteristics [4]
64,358.222 ± 0.048 km
Eccentricity 0.00066 ± 0.000087
0.493065490 ± 0.000000012 d
Inclination 0.06546 ± 0.040° (to Uranus's equator)
Satellite of Uranus
Physical characteristics
Dimensions 150 × 74 × 74 km [5] [note 1]
~30,000 km2 [a]
Volume 430100 km3 ± 23.0% [6]
Mass (3.871±0.891)×1017 kg [6]
Mean density
0.5–1.2 g/cm3 [7]
0.9 g/cm3 (assumed) [6]
synchronous [5]
zero [5]
Albedo 0.08 ± 0.01 [8]
  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. [9] It is named after the heroine of William Shakespeare's play Romeo and Juliet . It is also designated Uranus XI. [10]

Contents

Juliet belongs to the Portia group of satellites, which also includes Bianca, Cressida, Desdemona, Portia, Rosalind, Cupid, Belinda, and Perdita. [8] These satellites have similar orbits and photometric properties. [8] Other than its orbit, [4] size of 150 km × 74 km (93 mi × 46 mi), [5] and geometric albedo of 0.08, [8] little is known about Juliet.

In Voyager 2 imagery, Juliet appears as an elongated object, with its major axis pointing towards Uranus. The ratio of axes of Juliet's prolate spheroid is 0.5 ± 0.3, which is a rather extreme value. [5] Its surface is grey in color. [5]

Juliet may collide with Desdemona within the next 100 million years. [11]

See also

Notes

  1. ↑ 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. ↑ John Robert Reed (1985) Decadent style, p.38.
  4. 1 2 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 .
  5. 1 2 3 4 5 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.
  6. 1 2 3 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 . Bibcode:2024Icar..41115957F. doi:10.1016/j.icarus.2024.115957. ISSN   0019-1035.
  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. 1 2 3 4 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. (January 16, 1986). "Satellites of Uranus". IAU Circular. 4164. Retrieved 29 October 2011.
  10. ↑ "Planet and Satellite Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology. July 21, 2006. Retrieved 6 August 2006.
  11. ↑ 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.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.