Cordelia (moon)

Cordelia
	Cordelia (Imaged 24 January 1986)
Discovery
Discovered by	Richard J. Terrile / Voyager 2
Discovery date	January 20, 1986
Designations
Designation	Uranus VI
Pronunciation	/kɔːrˈdiːliə/
Adjectives	Cordelian
Orbital characteristics
Mean orbit radius	49751.722 ± 0.149 km
Eccentricity	0.00026 ± 0.000096
Orbital period	0.33503384 ± 0.00000058 d
Inclination	0.08479 ± 0.031° (to Uranus' equator)
Satellite of	Uranus
Group	ring shepherd
Physical characteristics
Dimensions	50 × 36 × 36 km
Mean radius	20.1 ± 3 km
Surface area	~5500 km2
Volume	~38,900 km3
Mass	~4.4×1016 kg
Mean density	~1.3 g/cm3 (assumed)
surface gravity	~0.0073 m/s2
escape velocity	~0.017 km/s
Rotation period	synchronous
Axial tilt	zero
Albedo	0.08 ± 0.01 ; 0.07;
Physics	~64 K

Short description: Moon of Uranus

Cordelia is the innermost known moon of Uranus. It was discovered from the images taken by Voyager 2 on January 20, 1986, and was given the temporary designation S/1986 U 7.^[8] It was not detected again until the Hubble Space Telescope observed it in 1997.^[7]^[9] Cordelia takes its name from the youngest daughter of Lear in William Shakespeare's King Lear. It is also designated Uranus VI.^[10]

Other than its orbit,^[3] radius of 20 km^[4] and geometric albedo of 0.08^[7] virtually nothing is known about it. In the Voyager 2 images Cordelia appears as an elongated object with its major axis pointing towards Uranus. The ratio of axes of Cordelia's prolate spheroid is 0.7 ± 0.2.^[4]

Cordelia acts as the inner shepherd satellite for Uranus' ε ring.^[11] Cordelia's orbit is within Uranus' synchronous orbit radius, and is therefore slowly decaying due to tidal deceleration.^[4]

Cordelia is very close to a 5:3 orbital resonance with Rosalind.^[12]

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
↑ Jennifer Bates (2010) Hegel and Shakespeare on Moral Imagination, p. 102
↑ ^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 ^5.2 "Planetary Satellite Physical Parameters". JPL (Solar System Dynamics). 24 October 2008. http://ssd.jpl.nasa.gov/?sat_phys_par.
↑ ^6.0 ^6.1 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 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. (1986-01-27). "Satellites and Rings of Uranus". IAU Circular 4168. http://www.cbat.eps.harvard.edu/iauc/04100/04168.html#item1. Retrieved 2011-10-31.
↑ Showalter, M. R.; Lissauer, J. J. (2003-09-03). "Satellites of Uranus". IAU Circular 8194. http://www.cbat.eps.harvard.edu/iauc/08100/08194.html. Retrieved 2011-10-31.
↑ "Planet and Satellite Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology. July 21, 2006. http://planetarynames.wr.usgs.gov/Page/Planets.
↑ Esposito, L. W. (2002). "Planetary rings". Reports on Progress in Physics 65 (12): 1741–1783. doi:10.1088/0034-4885/65/12/201. Bibcode: 2002RPPh...65.1741E.
↑ Murray, Carl D.; Thompson, Robert P. (1990-12-06). "Orbits of shepherd satellites deduced from the structure of the rings of Uranus". Nature 348 (6301): 499–502. doi:10.1038/348499a0. ISSN 0028-0836. Bibcode: 1990Natur.348..499M.

External links

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Original source: https://en.wikipedia.org/wiki/Cordelia (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] Jennifer Bates (2010) Hegel and Shakespeare on Moral Imagination, p. 102

[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 ^5.2 "Planetary Satellite Physical Parameters". JPL (Solar System Dynamics). 24 October 2008. http://ssd.jpl.nasa.gov/?sat_phys_par.

[Williams_2007_nssdc-6] 6.0 ^6.1 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 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_4168-9] Smith, B. A. (1986-01-27). "Satellites and Rings of Uranus". IAU Circular 4168. http://www.cbat.eps.harvard.edu/iauc/04100/04168.html#item1. Retrieved 2011-10-31.

[IAUC_8194-10] Showalter, M. R.; Lissauer, J. J. (2003-09-03). "Satellites of Uranus". IAU Circular 8194. http://www.cbat.eps.harvard.edu/iauc/08100/08194.html. Retrieved 2011-10-31.

[Gazetteer-11] "Planet and Satellite Names and Discoverers". Gazetteer of Planetary Nomenclature. USGS Astrogeology. July 21, 2006. http://planetarynames.wr.usgs.gov/Page/Planets.

[Esposito_2002-12] Esposito, L. W. (2002). "Planetary rings". Reports on Progress in Physics 65 (12): 1741–1783. doi:10.1088/0034-4885/65/12/201. Bibcode: 2002RPPh...65.1741E.

[Murray_Thompson_1990-13] Murray, Carl D.; Thompson, Robert P. (1990-12-06). "Orbits of shepherd satellites deduced from the structure of the rings of Uranus". Nature 348 (6301): 499–502. doi:10.1038/348499a0. ISSN 0028-0836. Bibcode: 1990Natur.348..499M.

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[lower-alpha 1]

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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 ...
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Cordelia (moon)

Topic: Astronomy

See also

References

External links

Discovery
Cordelia (Imaged 24 January 1986)
Discovered by	Richard J. Terrile / Voyager 2
Discovery date	January 20, 1986
Designations
Designation	Uranus VI
Pronunciation	/kɔːrˈdiːliə/^[1]
Adjectives	Cordelian^[2]
Orbital characteristics
Mean orbit radius	49751.722 ± 0.149 km^[3]
Eccentricity	0.00026 ± 0.000096^[3]
Orbital period	0.33503384 ± 0.00000058 d^[3]
Inclination	0.08479 ± 0.031° (to Uranus' equator)^[3]
Satellite of	Uranus
Group	ring shepherd
Physical characteristics
Dimensions	50 × 36 × 36 km^[4]
Mean radius	20.1 ± 3 km^[4]^[5]^[6]
Surface area	~5500 km²^{[lower-alpha 1]}
Volume	~38,900 km³^{[lower-alpha 1]}
Mass	~4.4×10¹⁶ kg^{[lower-alpha 1]}
Mean density	~1.3 g/cm³ (assumed)^[5]
surface gravity	~0.0073 m/s²^{[lower-alpha 1]}
escape velocity	~0.017 km/s^{[lower-alpha 1]}
Rotation period	synchronous^[4]
Axial tilt	zero^[4]
Albedo	0.08 ± 0.01 ^[7] 0.07^[5]^[6]
Physics	~64 K^{[lower-alpha 1]}