Juliet (moon)
{{Short description|Moon of Uranus}}
: There is also an asteroid called 1285 Julietta.
{{Infobox planet
| name = Juliet
| image = Julietmoon.png
| discoverer = Stephen P. Synnott / Voyager 2
| discovered = January 3, 1986
| mpc_name = Uranus XI
| pronounced = {{IPAc-en|ˈ|dʒ|uː|l|i|ɛ|t}}{{cite book|author=Benjamin Smith|year=1903|title=The Century Dictionary and Cyclopedia}}
| adjective = Julietian{{cite magazine|author=W. M. Anderson|year=1892|title=Daniel Johnson Brimm|magazine=Shield and Diamond|volume=2|issue=1|page=116}}John Robert Reed (1985) Decadent style, p.38.
| semimajor = 64,358.222 ± 0.048 km
| eccentricity = 0.00066 ± 0.000087
| period = 0.493065490 ± 0.000000012 d
| inclination = 0.06546 ± 0.040° (to Uranus' equator)
| satellite_of = Uranus
| dimensions = 150 × 74 × 74 km{{refn|group=note|Only two dimensions are known; the third dimension has been assumed to equal the smaller known dimension.}}
| surface_area = ~30,000 km2{{efn|name=calculated}}
| volume = {{val|430100|23.0|u=km3|errend=%}}
| mass = {{val|3.871|0.891|e=17|u=kg}}
| density = ≥0.61 g/cm3
~0.90 g/cm3 (assumed)
| surface_grav = ~{{Gr|3.871e-4|75}}–{{Gr|3.871e-4|37}} m/s2{{efn|name=calculated}}
| escape_velocity = ~{{V2|3.871e-4|75}}–{{V2|3.871e-4|37}} km/s{{efn|name=calculated}}
| single_temperature = ~64 K{{efn|name=calculated}}
}}
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. It is named after the heroine of William Shakespeare's play Romeo and Juliet. It is also designated Uranus XI.
Juliet belongs to the Portia group of satellites, which also includes Bianca, Cressida, Desdemona, Portia, Rosalind, Cupid, Belinda, and Perdita. These satellites have similar orbits and photometric properties. Other than its orbit, size of 150 × 74 km, and geometric albedo of 0.08, virtually nothing 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. Its surface is grey in color.
Juliet may collide with Desdemona within the next 100 million years.
See also
Notes
{{notes
| notes =
{{efn
| name = calculated
| Calculated on the basis of other parameters.
}}
}}
References
{{reflist
| refs =
{{cite journal| doi = 10.1086/300263| last1 = Jacobson| first1 = R. A.| year = 1998| title = The Orbits of the Inner Uranian Satellites From Hubble Space Telescope and Voyager 2 Observations| journal = The Astronomical Journal| volume = 115| issue = 3| pages = 1195–1199| bibcode = 1998AJ....115.1195J| doi-access = free}}
{{cite journal| doi = 10.1006/icar.2001.6597| last = Karkoschka| first = Erich| author-link = Erich Karkoschka| year = 2001| title = Voyager's Eleventh Discovery of a Satellite of Uranus and Photometry and the First Size Measurements of Nine Satellites| journal = Icarus| volume = 151| issue = 1| pages = 69–77| bibcode = 2001Icar..151...69K| ref = {{sfnRef|Karkoschka, Voyager|2001}}}}
{{cite journal| doi = 10.1006/icar.2001.6596| last = Karkoschka| first = Erich| author-link = Erich Karkoschka| year = 2001| title = Comprehensive Photometry of the Rings and 16 Satellites of Uranus with the Hubble Space Telescope| journal = Icarus| volume = 151| issue = 1| pages = 51–68| bibcode = 2001Icar..151...51K| ref = {{sfnRef|Karkoschka, Hubble|2001}}}}
{{cite journal
| last = Smith
| first = B. A.
| title = Satellites of Uranus
| journal = IAU Circular
| volume = 4164
| date = January 16, 1986
| url = http://www.cbat.eps.harvard.edu/iauc/04100/04164.html#Item1
| access-date = 29 October 2011
}}
{{cite web
| title = Planet and Satellite Names and Discoverers
| work = Gazetteer of Planetary Nomenclature
| publisher = USGS Astrogeology
| date = July 21, 2006
| url = http://planetarynames.wr.usgs.gov/Page/Planets
| access-date = 6 August 2006
}}
{{cite journal| doi = 10.1006/icar.1996.5568| last1 = Duncan| first1 = Martin J.| last2 = Lissauer| first2 = Jack J.| year = 1997| title = Orbital Stability of the Uranian Satellite System| journal = Icarus| volume = 125| issue = 1| pages = 1–12| bibcode = 1997Icar..125....1D}}
{{Cite journal |last1=French |first1=Richard G. |last2=Hedman |first2=Matthew M. |last3=Nicholson |first3=Philip D. |last4=Longaretti |first4=Pierre-Yves |last5=McGhee-French |first5=Colleen A. |date=2024-03-15 |title=The Uranus system from occultation observations (1977–2006): Rings, pole direction, gravity field, and masses of Cressida, Cordelia, and Ophelia |url=https://www.sciencedirect.com/science/article/pii/S0019103524000150 |journal=Icarus |volume=411 |pages=115957 |doi=10.1016/j.icarus.2024.115957 |issn=0019-1035|arxiv=2401.04634 |bibcode=2024Icar..41115957F }}
}}
External links
- [https://web.archive.org/web/20021203195319/http://solarsystem.nasa.gov/planets/profile.cfm?Object=Ura_Juliet Juliet Profile] by [http://solarsystem.nasa.gov NASA's Solar System Exploration]
- [http://www.astronomy.com/asy/objects/images/layton_uranus2_700.jpg Juliet + Ring diagram] (Courtesy of Astronomy Magazine 2005)
- [http://www.dtm.ciw.edu/users/sheppard/satellites/urasatdata.html Uranus' Known Satellites] (by Scott S. Sheppard)
{{Uranus}}
{{Moons of Uranus}}
{{Solar System moons (compact)}}