Iocaste (moon)

Iocaste, also known as Jupiter XXIV, is a retrograde irregular satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2000, and given the temporary designation S/2000 J 3.[4][5]

Not to be confused with the minor planet named 899 Jokaste.

Iocaste
Discovery
Discovered byScott S. Sheppard
David C. Jewitt
Yanga R. Fernandez
and Eugene Magnier
Discovery dateNovember 23, 2000 [1]
Designations
Designation
Jupiter XXIV
Pronunciation/aɪoʊˈkæstiː/
Named after
Jocasta (Ιοκάστη)
S/2000 J 3
AdjectivesIocastean /ˌaɪoʊkæˈstiːən/[2]
Orbital characteristics [3]
21269000 km
Eccentricity0.216
−631.5 days
129.8°
Inclination149.4°
271.3°
80.0°
Satellite ofJupiter
GroupAnanke group
Physical characteristics
Mean diameter
5 km
Mass1.9483×1014 kg
Mean density
2.6 g/cm3
11  km/h[1]
21.8

    Iocaste orbits Jupiter at an average distance of 20.723 million kilometers in 609.427 days, at an inclination of 147° to the ecliptic (146° to Jupiter's equator) with an eccentricity of 0.2874.

    It was named in October 2002 after Jocasta,[6] the mother/wife of Oedipus in Greek mythology.

    Iocaste belongs to the Ananke group, believed to be the remnants of a break-up of a captured heliocentric asteroid.[7][8]

    The satellite is about 5 kilometres in diameter[9] and appears grey (colour indices B−V=0.63, R−V=0.36), similar to C-type asteroids.[10]

    References
    1. "Iocaste: By the Numbers". NASA. Archived from the original on April 12, 2016. Retrieved March 29, 2015.
    2. Kin'ya Tsuruta (1996) Shiga Naoya's A Dark Night's Passing, p. 92
    3. S.S. Sheppard (2019), Moons of Jupiter, Carnegie Science, on line
    4. Daniel W. E. Green (January 5, 2001). "Satellites of Jupiter". International Astronomical Union Central Bureau for Astronomical Telegrams.
    5. Brian G. Marsden (January 5, 2001). "S/2000 J 2, S/2000 J 3, S/2000 J 4, S/2000 J 5, S/2000 J 6". International Astronomical Union Minor Planet Center.
    6. Daniel W. E. Green (October 22, 2002). "Comet P/2002 T5 (Linear)". International Astronomical Union Central Bureau for Astronomical Telegrams.
    7. Sheppard, S. S.; Jewitt, D. C.; "An Abundant Population of Small Irregular Satellites Around Jupiter" Archived August 13, 2006, at the Wayback Machine, Nature, Vol. 423 (May 2003), pp. 261–263
    8. Nesvorný, D.; Alvarellos, J. L. A.; Dones, L.; and Levison, H. F.; "Orbital and Collisional Evolution of the Irregular Satellites", The Astronomical Journal, Vol. 126 (2003), pp. 398–429
    9. Sheppard, S. S.; Jewitt, D. C.; Porco, C. C.; "Jupiter's Outer Satellites and Trojans" Archived June 14, 2007, at the Wayback Machine, in Jupiter: The Planet, Satellites and Magnetosphere, edited by Fran Bagenal, Timothy E. Dowling, and William B. McKinnon, Cambridge Planetary Science, Vol. 1, Cambridge, UK: Cambridge University Press, ISBN 0-521-81808-7, 2004, pp. 263–280
    10. Grav, T.; Holman, M. J.; Gladman, B. J.; and Aksnes, K.; "Photometric survey of the irregular satellites", Icarus, Vol. 166 (2003), pp. 33–45

    Further reading
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