Juliet (moon)

Juliet
Discovery
Discovered by	Stephen P. Synnott / Voyager 2
Discovery date	January 3, 1986
Designations
Designation	Uranus XI
Pronunciation	/ˈdʒuːliɛt/
Adjectives	Julietian
Orbital characteristics
Semi-major axis	64,358.222 ± 0.048 km
Eccentricity	0.00066 ± 0.000087
Orbital period	0.493065490 ± 0.000000012 d
Inclination	0.06546 ± 0.040° (to Uranus' equator)
Satellite of	Uranus
Physical characteristics
Dimensions	150 × 74 × 74 km
Mean radius	46.8 ± 4 km
Surface area	~35,000 km2
Volume	~632,000 km3
Mass	~5.6×1017 kg
Mean density	~1.3 g/cm3 (assumed)
surface gravity	~0.016 m/s2
escape velocity	~0.040 km/s
Rotation period	synchronous
Axial tilt	zero
Albedo	0.08 ± 0.01
Physics	~64 K

Short description: Moon of Uranus

There is also an asteroid called 1285 Julietta.

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.^[8] It is named after the heroine of William Shakespeare's play Romeo and Juliet. It is also designated Uranus XI.^[9]

Juliet belongs to Portia Group of satellites, which also includes Bianca, Cressida, Desdemona, Portia, Rosalind, Cupid, Belinda and Perdita.^[7] These satellites have similar orbits and photometric properties.^[7] Other than its orbit,^[3] radius of 53 km^[4] and geometric albedo of 0.08,^[7] 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.^[10]

References

Explanatory notes

↑ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 Calculated on the basis of other parameters.

Citations

↑ Benjamin Smith (1903) The Century Dictionary and Cyclopedia
↑ W. M. Anderson (1892) 'Daniel Johnson Brimm', Shield and Diamond, vol. 2, no. 1, p. 116
↑ ^3.0 ^3.1 ^3.2 ^3.3 ^3.4 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. doi:10.1086/300263. Bibcode: 1998AJ....115.1195J.
↑ ^4.0 ^4.1 ^4.2 ^4.3 ^4.4 ^4.5 ^4.6 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. doi:10.1006/icar.2001.6597. Bibcode: 2001Icar..151...69K.
↑ ^5.0 ^5.1 "Planetary Satellite Physical Parameters". JPL (Solar System Dynamics). 24 October 2008. http://ssd.jpl.nasa.gov/?sat_phys_par.
↑ Williams, Dr. David R. (23 November 2007). "Uranian Satellite Fact Sheet". NASA (National Space Science Data Center). http://nssdc.gsfc.nasa.gov/planetary/factsheet/uraniansatfact.html.
↑ ^7.0 ^7.1 ^7.2 ^7.3 Karkoschka, Erich (2001). "Comprehensive Photometry of the Rings and 16 Satellites of Uranus with the Hubble Space Telescope". Icarus 151 (1): 51–68. doi:10.1006/icar.2001.6596. Bibcode: 2001Icar..151...51K.
↑ Smith, B. A. (January 16, 1986). "Satellites of Uranus". IAU Circular 4164. http://www.cbat.eps.harvard.edu/iauc/04100/04164.html#Item1. Retrieved 29 October 2011.
↑ "Planet and Satellite Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology. July 21, 2006. http://planetarynames.wr.usgs.gov/Page/Planets.
↑ Duncan, Martin J.; Lissauer, Jack J. (1997). "Orbital Stability of the Uranian Satellite System". Icarus 125 (1): 1–12. doi:10.1006/icar.1996.5568. Bibcode: 1997Icar..125....1D.

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)

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Original source: https://en.wikipedia.org/wiki/Juliet (moon). Read more

[calculated-7] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 Calculated on the basis of other parameters.

[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

[Jacobson_1998-3] 3.0 ^3.1 ^3.2 ^3.3 ^3.4 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. doi:10.1086/300263. Bibcode: 1998AJ....115.1195J.

[Karkoschka,_Voyager_2001-4] 4.0 ^4.1 ^4.2 ^4.3 ^4.4 ^4.5 ^4.6 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. doi:10.1006/icar.2001.6597. Bibcode: 2001Icar..151...69K.

[JPL-SSD-sat_phys-5] 5.0 ^5.1 "Planetary Satellite Physical Parameters". JPL (Solar System Dynamics). 24 October 2008. http://ssd.jpl.nasa.gov/?sat_phys_par.

[Williams_2007_nssdc-6] Williams, Dr. David R. (23 November 2007). "Uranian Satellite Fact Sheet". NASA (National Space Science Data Center). http://nssdc.gsfc.nasa.gov/planetary/factsheet/uraniansatfact.html.

[Karkoschka,_Hubble_2001-8] 7.0 ^7.1 ^7.2 ^7.3 Karkoschka, Erich (2001). "Comprehensive Photometry of the Rings and 16 Satellites of Uranus with the Hubble Space Telescope". Icarus 151 (1): 51–68. doi:10.1006/icar.2001.6596. Bibcode: 2001Icar..151...51K.

[IAUC_4164-9] Smith, B. A. (January 16, 1986). "Satellites of Uranus". IAU Circular 4164. http://www.cbat.eps.harvard.edu/iauc/04100/04164.html#Item1. Retrieved 29 October 2011.

[Gazetteer-10] "Planet and Satellite Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology. July 21, 2006. http://planetarynames.wr.usgs.gov/Page/Planets.

[Duncan_Lissauer_1997-11] Duncan, Martin J.; Lissauer, Jack J. (1997). "Orbital Stability of the Uranian Satellite System". Icarus 125 (1): 1–12. doi:10.1006/icar.1996.5568. Bibcode: 1997Icar..125....1D.

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v t e Moons of Uranus
Generally listed in increasing distance from Uranus
Inner	Rings of Uranus Cordelia Ophelia Bianca Cressida Desdemona Juliet Portia Rosalind Cupid Belinda Perdita Puck Mab
Major (spheroid)	Miranda Ariel Umbriel Titania Oberon
Outer (irregular)	Francisco Caliban Stephano Trinculo Sycorax Margaret Prospero Setebos Ferdinand
Geological features	Arielian Kachina Chasmata Yangoor Mirandian Verona Rupes Oberonian Hamlet Mommur Chasma Puckian Titanian Gertrude Messina Chasmata Ursula Rousillon Rupes Umbrielian Wunda Vuver Skynd

v t e Natural satellites of the Solar System
Planetary satellites	Terrestrial Martian Jovian Saturnian Uranian Neptunian
Dwarf-planet satellites	Plutonian Haumean Makemakean Eridian OR₁₀ Quaoaran Orcean
Minor-planet moons	Main belt binaries: Antiope Frostia Berna Tokai Ostro Balam Doppler Pauling Iwamoto Wolff Bettig Christophedumas Trojans: Patroclus–Menoetius Hektor–Skamandrios Iphthime Eurydamas TNOs: Huya Typhon–Echidna Lempo–Paha–Hiisi 2002 UX₂₅ Logos–Zoe Ceto–Phorcys Borasisi–Pabu Sila–Nunam Teharonhiawako–Sawiskera Salacia–Actaea 2002 WC₁₉ Altjira Varda–Ilmarë 2003 AZ₈₄ Gǃkúnǁʼhòmdímà–Gǃòʼé ǃHú Mors–Somnus Manwë–Thorondor ǂKá̦gára–ǃHãunu 2013 FY27
Ranked by size	Planetary-mass moon Ganymede largest: 5268 km / 0.413 Earths Titan Callisto Io Moon Europa Triton Titania Rhea Oberon Iapetus Charon Umbriel Ariel Dione Tethys Dysnomia Enceladus Miranda Vanth Proteus Mimas Ilmarë Nereid Hiʻiaka Actaea Hyperion ...
Discovery timeline Inner moons Irregular moons List Planetary-mass moons Naming Subsatellite Regular moons Trojan moons

Juliet (moon)

Topic: Astronomy

See also

References

External links

Discovery

Discovered by	Stephen P. Synnott / Voyager 2
Discovery date	January 3, 1986
Designations
Designation	Uranus XI
Pronunciation	/ˈdʒuːliɛt/^[1]
Adjectives	Julietian^[2]
Orbital characteristics
Semi-major axis	64,358.222 ± 0.048 km^[3]
Eccentricity	0.00066 ± 0.000087^[3]
Orbital period	0.493065490 ± 0.000000012 d^[3]
Inclination	0.06546 ± 0.040° (to Uranus' equator)^[3]
Satellite of	Uranus
Physical characteristics
Dimensions	150 × 74 × 74 km^[4]
Mean radius	46.8 ± 4 km^[4]^[5]^[6]
Surface area	~35,000 km²^{[lower-alpha 1]}
Volume	~632,000 km³^{[lower-alpha 1]}
Mass	~5.6×10¹⁷ kg^{[lower-alpha 1]}
Mean density	~1.3 g/cm³ (assumed)^[5]
surface gravity	~0.016 m/s²^{[lower-alpha 1]}
escape velocity	~0.040 km/s^{[lower-alpha 1]}
Rotation period	synchronous^[4]
Axial tilt	zero^[4]
Albedo	0.08 ± 0.01^[7]
Physics	~64 K^{[lower-alpha 1]}