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Caliban

  (kăl'ə-băn') pronunciation
n.

The satellite of Uranus that is 16th in distance from the planet.

[After Caliban, the slave in The Tempest by William Shakespeare.]


 
 
in astronomy, one of the natural satellites, or moons, of Uranus.


 
Wikipedia: Caliban (moon)
Caliban
Discovery
Discovered by Brett J. Gladman,
Philip D. Nicholson,
Joseph A. Burns,
and John J. Kavelaars
Discovered in September 6, 1997
Orbital characteristics
Semimajor axis 7,231,000 km
Eccentricity 0.1588
Orbital period 579.73 d
Inclination 120.28° (to Uranus' equator)
140.878° (to the local Laplace plane)
139.89° (to the ecliptic)
Is a satellite of Uranus
Physical characteristics
Mean diameter ~72 km (estimate)[1]
Surface area ~16,000 km2 (estimate)
Volume ~200,000 km3 (estimate)
Mass ~7.4×1017 kg (estimate)
Mean density ~1.5 g/cm3 (estimate)
Surface gravity ~0.02 m/s2 (estimate)
Escape velocity ~0.045 km/s (estimate)
Rotation period 2.7h[2]
Axial tilt unknown
Albedo 0.04 (assumed)[1]
Surface temp.
min mean max
~64 K (estimate)
Atmosphere none

Caliban (kal'-i-ban, IPA: /ˈkælɨbæn/, or kal'-ə-bən, /ˈkælɨbən/) is the second largest retrograde irregular moon of Uranus.

Caliban was discovered on 1997-09-06 by Brett J. Gladman, Philip D. Nicholson, Joseph A. Burns, and John J. Kavelaars using the 200-inch Hale telescope together with Sycorax and given the temporary designation S/1997 U 1.[3]

Designated Uranus XVI it was named after the monster character in William Shakespeare's play The Tempest..

The orbital parameters suggest that it may belong, together with Stephano to the same dynamic cluster, suggesting common origin.[4]

Its diameter is estimated at 72 km (assuming albedo of 0.04)[1] making it the second largest irregular satellite of Uranus, half the size of Sycorax, the biggest irregular satellite of Uranus.

Somewhat inconsistent reports put Caliban in light-red category (B-V=0.83 V-R=0.52,[5] B-V=1.23 V-R=0.47[2]) redder than Sycorax but still less red than most Kuiper Belt Objects.

The light curve suggests the rotation period of 2.7h.[2]

See also

References

  1. ^ a b c Scott S. Sheppard, David C. Jewitt, and Jan KleynaAn Ultradeep Survey for Irregular Satellites of Uranus: Limits to Completeness, The Astronomical Journal, 129 (2005), pages 518–525 . Preprint
  2. ^ a b c M. Maris, G. Carraro, G. Cremonese, M. Fulle Multicolor Photometry of the Uranus Irregular Satellites Sycorax and Caliban, The Astronomical Journal, 121 (May 2001), pp. 2800-2803, [1]
  3. ^ GLADMAN, NICHOLSON, BURNS, KAVELAARS, MARSDEN, WILLIAMS & OFFUTT Discovery of two distant irregular moons of Uranus, Nature, 392 (1998), pp. 897 - 899
  4. ^ Grav, Tommy; Holman, Matthew J.; Gladman, Brett J.; Aksnes, Kaare Photometric survey of the irregular satellites,Icarus, 166 (2003), pp. 33-45. Preprint
  5. ^ Rettig, Terrence W.; Walsh, Kevin; Consolmagno, Guy Implied Evolutionary Differences of the Jovian Irregular Satellites from a BVR Color Survey, Icarus, 154 (2001), pp. 313-320

External links


 
 

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Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved.  Read more
Columbia Encyclopedia. The Columbia Electronic Encyclopedia, Sixth Edition Copyright © 2003, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/  Read more
Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Caliban (moon)" Read more

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