From Wikipedia, the free encyclopedia
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 .
[1] 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,
[4] size of 50 × 36 km
[5] and
geometric albedo of 0.06
[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 .
[5]
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 .
[5]
Cordelia is very close to a 5:3
orbital resonance with
Rosalind .
[12]
See also
Notes
^
a
b
c
d Calculated on the basis of other parameters.
References
^
a
b
Smith, B. A. (1986-01-27).
"Satellites and Rings of Uranus" . IAU Circular . 4168 . Retrieved 2011-10-31 .
^ Benjamin Smith (1903). The Century Dictionary and Cyclopedia .
^ Jennifer Bates (2010). Hegel and Shakespeare on Moral Imagination . p. 102.
^
a
b
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 .
^
a
b
c
d
e
f
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 .
^
a
b
c
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 .
doi :
10.1016/j.icarus.2024.115957 .
ISSN
0019-1035 .
^
a
b
c
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 .
^
Williams, Dr. David R. (23 November 2007).
"Uranian Satellite Fact Sheet" .
NASA (National Space Science Data Center). Retrieved 12 December 2008 .
^
Showalter, M. R.; Lissauer, J. J. (2003-09-03).
"Satellites of Uranus" . IAU Circular . 8194 . Retrieved 2011-10-31 .
^
"Planet and Satellite Names and Discoverers" . Gazetteer of Planetary Nomenclature . USGS Astrogeology. July 21, 2006. Retrieved 6 August 2006 .
^
Esposito, L. W. (2002). "Planetary rings". Reports on Progress in Physics . 65 (12): 1741–1783.
Bibcode :
2002RPPh...65.1741E .
doi :
10.1088/0034-4885/65/12/201 .
S2CID
250909885 .
^
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.
Bibcode :
1990Natur.348..499M .
doi :
10.1038/348499a0 .
ISSN
0028-0836 .
S2CID
4320268 .
External links
Listed in approximately increasing distance from
Uranus
Inner Major (spheroid) Outer (irregular)
Geological features