Astronomy:Carme (moon)

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Short description: Moon of Jupiter
Carme
Carmé.jpg
Carme photographed by the Haute-Provence Observatory in December 1998
Discovery [1]
Discovered bySeth B. Nicholson
Discovery siteMt. Wilson Observatory
Discovery date30 July 1938
Designations
Designation
Jupiter XI
Pronunciation/ˈkɑːrm/[2][3]
Named afterΚάρμη Karmē
AdjectivesCarmean /kɑːrˈmən/[4]
Orbital characteristics[5]
Epoch 17 December 2020 (JD 2459200.5)
Observation arc82.02 yr (29,958 days)
0.1509370 astronomical unit|AU (22,579,850 km)
Eccentricity0.2294925
Orbital period–693.17 d
Mean anomaly17.48241°
Mean motion0° 31m 9.68s / day
Inclination163.53496° (to ecliptic)
Longitude of ascending node209.94088°
133.45035°
Satellite ofJupiter
GroupCarme group
Physical characteristics
Mean diameter46.7±0.9 km[6]
Rotation period10.40±0.05 h[7]
Albedo0.035±0.006[6]
Spectral type
D[6]
Apparent magnitude18.9[8]
Absolute magnitude (H)10.5[5]


Carme /ˈkɑːrm/ is a retrograde irregular satellite of Jupiter. It was discovered by Seth Barnes Nicholson at Mount Wilson Observatory in California in July 1938.[1] It is named after the mythological Carme, mother by Zeus of Britomartis, a Cretan goddess.

History

Carme observed by the Wide-field Infrared Survey Explorer (WISE) spacecraft in 2014

Carme did not receive its present name until 1975;[9] before then, it was simply known as Jupiter XI. It was sometimes called "Pan"[10] between 1955 and 1975 (Pan is now the name of a satellite of Saturn).

It gives its name to the Carme group, made up of irregular retrograde moons orbiting Jupiter at a distance ranging between 23 and 24 Gm and at an inclination of about 165°. Its orbital elements are as of January 2000.[11] They are continuously changing due to solar and planetary perturbations.

Properties

With a diameter of 46.7±0.9 km, it is the largest member of the Carme group and the fourth largest irregular moon of Jupiter.[6] It is light red in color (B−V=0.76, V−R=0.47), similar to D-type asteroids and consistent with Taygete, but not Kalyke.[12]

See also

  • Irregular satellites
  • Jupiter's moons in fiction

References

  1. 1.0 1.1 Nicholson, S. B. (1938). "Two New Satellites of Jupiter". Publications of the Astronomical Society of the Pacific 50 (297): 292–293. doi:10.1086/124963. Bibcode1938PASP...50..292N. http://adsabs.harvard.edu//full/seri/PASP./0050//0000292.000.html. 
  2. Noah Webster (1884) A Practical Dictionary of the English Language
  3. "Carme". Dictionary.com Unabridged. Random House. https://www.dictionary.com/browse/Carme. 
  4. Yenne (1987) The Atlas of the Solar System
  5. 5.0 5.1 "M.P.C. 127087". Minor Planet Circular. Minor Planet Center. 17 November 2019. https://minorplanetcenter.net/iau/ECS/MPCArchive/2020/MPC_20201117.pdf. 
  6. 6.0 6.1 6.2 6.3 Grav, T.Expression error: Unrecognized word "etal". (August 2015). "NEOWISE: Observations of the Irregular Satellites of Jupiter and Saturn". The Astrophysical Journal 809 (1): 9. doi:10.1088/0004-637X/809/1/3. 3. Bibcode2015ApJ...809....3G. https://authors.library.caltech.edu/61254/1/Grav_2015.pdf. 
  7. Luu, Jane (September 1991). "CCD photometry and spectroscopy of the outer Jovian satellites". Astronomical Journal 102: 1213–1225. doi:10.1086/115949. ISSN 0004-6256. Bibcode1991AJ....102.1213L. 
  8. Sheppard, Scott. "Scott S. Sheppard - Jupiter Moons". Department of Terrestrial Magnetism. Carnegie Institution for Science. https://sites.google.com/carnegiescience.edu/sheppard/moons/jupitermoons. 
  9. IAUC 2846: Satellites of Jupiter 1974 October 7 (naming the moon)
  10. Payne-Gaposchkin, Cecilia; Katherine Haramundanis (1970). Introduction to Astronomy. Englewood Cliffs, N.J.: Prentice-Hall. ISBN 0-13-478107-4. 
  11. Jacobson, R. A. (2000). "The Orbits of Outer Jovian Satellites". Astronomical Journal 120 (5): 2679–2686. doi:10.1086/316817. Bibcode2000AJ....120.2679J. https://trs.jpl.nasa.gov/bitstream/2014/15175/1/00-1187.pdf. 
  12. Grav, Tommy; Holman, M. J.; Gladman, B. J.; Aksnes, K. (2003). "Photometric survey of the irregular satellites". Icarus 166 (1): 33–45. doi:10.1016/j.icarus.2003.07.005. Bibcode2003Icar..166...33G. 

External links