Juliet (moon) - Misplaced Pages

Moon of Uranus

There is also an asteroid called 1285 Julietta.

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 (sidereal)	0.493065490 ± 0.000000012 d
Inclination	0.06546 ± 0.040° (to Uranus' equator)
Satellite of	Uranus
Physical characteristics
Dimensions	150 × 74 × 74 km
Surface area	~30,000 km
Volume	430100±23.0% km
Mass	(3.871±0.891)×10 kg
Mean density	≥0.61 g/cm ~0.90 g/cm (assumed)
Surface gravity	~0.005–0.019 m/s
Escape velocity	~0.026–0.037 km/s
Synodic rotation period	synchronous
Axial tilt	zero
Albedo	0.08 ± 0.01
Temperature	~64 K
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. 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.

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.
^ 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.
^ 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.
^ 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.
^ 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)

Uranus

Outline

Geography

Major moons

Astronomy

Discovery	William Herschel Gerard Kuiper James L. Elliot William Lassell
General	Uranus-crossing minor planets
Co-orbitals	Trojans 2011 QF₉₉ 2014 YX₄₉ 83982 Crantor (472651) 2015 DB216

Exploration

Past	Voyager 2 (1986 flyby)
Future	Tianwen-4 (2029, flyby 2045)
Proposals	MUSE OCEANUS ODINUS Uranus Orbiter and Probe Uranus Pathfinder

Fiction

Moons of Uranus

Listed in approximately increasing distance from Uranus

Inner

Major (spheroid)

Miranda
Ariel
Umbriel
Titania
Oberon

Outer (irregular)

Prograde	Margaret
Retrograde	Francisco Caliban Stephano S/2023 U 1 Trinculo Sycorax Prospero Setebos Ferdinand

Geological features

v t e Natural satellites of the Solar System
Planetary satellites of	Earth Mars Jupiter Saturn Uranus Neptune
Dwarf planet satellites of	Orcus Pluto Haumea Quaoar Makemake Gonggong Eris
Minor-planet moons	Near-Earth Florence Didymos Dimorphos Moshup Squannit 1994 CC 2001 SN₂₆₃ Main belt Kalliope Linus Euphrosyne Daphne Peneius Eugenia Petit-Prince Sylvia Romulus Remus Minerva Aegis Gorgoneion Camilla Elektra Kleopatra Alexhelios Cleoselene Ida Dactyl Roxane Olympias Pulcova Balam Dinkinesh (Selam) Jupiter trojans Patroclus Menoetius Hektor Skamandrios Eurybates Queta TNOs Lempo Hiisi Paha 2002 UX₂₅ Sila–Nunam Salacia Actaea Varda Ilmarë Gǃkúnǁʼhòmdímà Gǃòʼé ǃHú 2013 FY₂₇
Ranked by size	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 Phoebe ...
Discovery timeline Inner moons Irregular moons List Planetary-mass moons Naming Subsatellite Regular moons Trojan moons

Categories:

See also

Notes

References

External links