Iocaste (moon)
Template:Short description Script error: No such module "Distinguish". Template:Use dmy dates Script error: No such module "infobox".Script error: No such module "Check for unknown parameters".
Iocaste, also known as Jupiter XXIV, is a little retrograde irregular satellite of Jupiter.
Discovery and Naming
It was discovered by a team of astronomers from the University of Hawaiʻi including: David C. Jewitt, Yanga R. Fernandez, and Eugene Magnier led by Scott S. Sheppard in 2000, and given the temporary designation S/2000 J 3.[1][2]
It was named in October 2002 after Jocasta,[3] the mother/wife of Oedipus in Greek mythology. The name ending in "e" was chosen in accordance with the International Astronomical Union's policy for designating outer moons with retrograde orbits.
Orbit
Iocaste orbits Jupiter at an average distance of 21.431.650 in 641 earth days, at an inclination of 149° to the ecliptic with an eccentricity of 0.329. Its orbit is continuously changing due to solar and planetary perturbations.
It belongs to the Ananke group, made up a tightly of irregular retrograde moons orbiting Jupiter at a distance ranging between 19–22 million km, inclinations between 144 and 156°, and eccentricities between 0.10 and 0.30.
Physical characteristics
The satellite is about 5 kilometres in diameter (assumed Albedo 4 %) [4] and appears grey (colour indices B−V=0.63, R−V=0.36), similar to C-type asteroids.[5]
Origin
Iocaste probably did not form near Jupiter but was captured by Jupiter later.Like the other members of the Ananke group, which have similar orbits, Iocaste is probably the remnant of a broken, captured heliocentric asteroid.[6][7]
See also
References
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Sheppard, S. S.; Jewitt, D. C.; Porco, C. C.; "Jupiter's Outer Satellites and Trojans" Template:Webarchive, in Jupiter: The Planet, Satellites and Magnetosphere, edited by Fran Bagenal, Timothy E. Dowling, and William B. McKinnon, Cambridge Planetary Science, Volume 1, Cambridge, United Kingsom: Cambridge University Press, Template:ISBN, 2004, pp. 263–280
- ↑ Grav, T.; Holman, M. J.; Gladman, B. J.; and Aksnes, K.; "Photometric survey of the irregular satellites", Icarus, Volume 166 (2003), pages 33–45
- ↑ Sheppard, S. S.; Jewitt, D. C.; "An Abundant Population of Small Irregular Satellites Around Jupiter" Template:Webarchive, Nature, Volume 423 (May 2003), pages 261–263
- ↑ Nesvorný, D.; Alvarellos, J. L. A.; Dones, L.; and Levison, H. F.; "Orbital and Collisional Evolution of the Irregular Satellites", The Astronomical Journal, Volume 126 (2003), pages 398–429 Script error: No such module "Unsubst".Template:Cbignore
Cite error: <ref> tag with name "jpl-phys" defined in <references> is not used in prior text.
Cite error: <ref> tag with name "MPC127087" defined in <references> is not used in prior text.
Cite error: <ref> tag with name "SheppardMoons" defined in <references> is not used in prior text.
Further reading
- Ephemeris IAU-MPC NSES
- Mean orbital parameters NASA JPL
Script error: No such module "Navbox".