Kalyke

Kalyke /ˈkælɪk/, also known as Jupiter XXIII, 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 et al. in 2000, and given the temporary designation S/2000 J 2.[5][1]

Kalyke
Kalyke imaged by the Canada-France-Hawaii Telescope in December 2001
Discovery[1]
Discovered byScott S. Sheppard et al.
Discovery siteMauna Kea Obs.
Discovery date23 November 2000
Designations
Designation
Jupiter XXIII
Pronunciation/ˈkælɪk/[2]
Named after
Καλύκη Kalykē
S/2000 J 2
AdjectivesKalykean /kælɪˈkən/
Orbital characteristics[3]
23583000 km
Eccentricity0.245
−743.0 days
116.3°
Inclination165.2°
38.7°
216.6°
Satellite ofJupiter
GroupCarme group
Physical characteristics
Mean diameter
6.9±1.3 km[4]
Albedo0.029±0.014[4]
21.8

    From infrared thermal measurements by the WISE spacecraft, Kalyke's albedo is measured at 2.9%, corresponding to a diameter of 6.9 kilometres.[4] It orbits Jupiter at an average distance of 23,181,000 km in 721.021 days, at an inclination of 166° to the ecliptic (165° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.2140.

    It was named in October 2002 after the Greek mythological figure Kalyke or Calyce.[6]

    Kalyke observed by the WISE spacecraft in 2010

    It belongs 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°.

    References

    1. MPEC 2001-A28: S/2000 J 2, S/2000 J 3, S/2000 J 4, S/2000 J 5, S/2000 J 6 2001 January 5 (discovery and ephemeris)
    2. as 'Calyce' in Noah Webster (1884) A Practical Dictionary of the English Language
    3. S.S. Sheppard (2019), Moons of Jupiter, Carnegie Science, on line
    4. Grav, T.; Bauer, J. M.; Mainzer, A. K.; Masiero, J. R.; Nugent, C. R.; Cutri, R. M.; et al. (August 2015). "NEOWISE: Observations of the Irregular Satellites of Jupiter and Saturn". The Astrophysical Journal. 809 (1): 9. Bibcode:2015ApJ...809....3G. doi:10.1088/0004-637X/809/1/3. 3.
    5. IAUC 7555: Satellites of Jupiter Archived 2002-09-16 at the Wayback Machine 2001 January 5 (discovery)
    6. IAUC 7998: Satellites of Jupiter 2002 October 22 (naming the moon)
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