Juliet (moon)
| File:Julietmoon.png | |
| Discovery | |
|---|---|
| Discovered by | Stephen P. Synnott / Voyager 2 |
| Discovery date | January 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[lower-alpha 1] | |
| 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] |
| |
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]
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
- ↑ Calculated on the basis of other parameters.
References
- ↑ Benjamin Smith (1903). The Century Dictionary and Cyclopedia.
- ↑ W. M. Anderson (1892). "Daniel Johnson Brimm". Shield and Diamond. Vol. 2 no. 1. p. 116.
- ↑ John Robert Reed (1985) Decadent style, p.38.
- ↑ 4.0 4.1 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.
- ↑ 5.0 5.1 5.2 5.3 5.4 5.5 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.
- ↑ 6.0 6.1 6.2 Lua error in package.lua at line 80: module 'Module:Citation/CS1/Suggestions' not found.
- ↑ 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.
- ↑ 8.0 8.1 8.2 8.3 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.
- ↑ Smith, B. A. (January 16, 1986). "Satellites of Uranus". IAU Circular. 4164. Retrieved 29 October 2011.
- ↑ "Planet and Satellite Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology. July 21, 2006. Retrieved 6 August 2006.
- ↑ 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
- Juliet Profile by NASA's Solar System Exploration
- Juliet + Ring diagram (Courtesy of Astronomy Magazine 2005)
- Uranus' Known Satellites (by Scott S. Sheppard)
Template:Moons of Uranus Template:Uranus Template:Solar System moons (compact)