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Kalyke

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Kalyke
Kalyke imaged by theCanada-France-Hawaii Telescopein December 2001
Discovery [1]
Discovered byScott S. Sheppard
David C. Jewitt
Yanga R. Fernandez
Eugene A. Magnier
Discovery siteMauna Kea Observatory
Discovery date23 November 2000
Designations
Designation
Jupiter XXIII
Pronunciation/ˈkælək/[2]
Named after
ΚαλύκηKalykē
S/2000 J 2
AdjectivesKalykean/kæləˈkən/
Orbital characteristics[3]
Epoch27 April 2019 (JD2458600.5)
Observation arc16.34yr(5,967 days)
0.1614179AU(24,147,770 km)
Eccentricity0.3028225
−766.61 d
63.16063°
0° 28m10.57s/ day
Inclination165.93730° (toecliptic)
132.43876°
323.78885°
Satellite ofJupiter
GroupCarme group
Physical characteristics
6.9±1.3 km[4]
Albedo0.029±0.014[4]
21.8[5]
15.4[3]

Kalyke/ˈkælək/,also known asJupiter XXIII,is aretrogradeirregular satelliteofJupiter.It was discovered by a team of astronomers from theUniversity of Hawaiiled byScott S. Sheppardin 2000, and given the temporary designationS/2000 J 2.[6][1]

From infrared thermal measurements by theWISEspacecraft, Kalyke'salbedois 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 766.61 days, at aninclinationof 166° to theecliptic(165° to Jupiter's equator), in aretrogradedirection and with aneccentricityof 0.2140.

It was named in October 2002 after the Greek mythological figure Kalyke orCalyce.[7]

Kalyke observed by theWISEspacecraft in 2010

It belongs to theCarme 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°. Kalyke is redder in color (B−V=0.94, V−R=0.70) than other moons of the Carme group, suggesting that it is a capturedcentaurorTNO,or a remnant of such an object that collided with the Carme group progenitor.[8]

References

  1. ^abMPEC 2001-A28:S/2000 J 2, S/2000 J 3, S/2000 J 4, S/2000 J 5, S/2000 J 62001 January 5 (discovery and ephemeris)
  2. ^as 'Calyce' in Noah Webster (1884)A Practical Dictionary of the English Language
  3. ^ab"M.P.C. 115890"(PDF).Minor Planet Circular.Minor Planet Center. 27 August 2019.
  4. ^abcGrav, 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.arXiv:1505.07820.Bibcode:2015ApJ...809....3G.doi:10.1088/0004-637X/809/1/3.S2CID5834661.3.
  5. ^Sheppard, Scott."Scott S. Sheppard - Jupiter Moons".Department of Terrestrial Magnetism.Carnegie Institution for Science.Retrieved26 November2020.
  6. ^IAUC 7555:Satellites of JupiterArchived2002-09-16 at theWayback Machine2001 January 5 (discovery)
  7. ^IAUC 7998:Satellites of Jupiter2002 October 22 (naming the moon)
  8. ^Grav, Tommy; Holman, M. J.; Gladman, B. J.; Aksnes, K. (2003). "Photometric survey of the irregular satellites".Icarus.166(1): 33−45.arXiv:astro-ph/0301016.Bibcode:2003Icar..166...33G.doi:10.1016/j.icarus.2003.07.005.S2CID7793999.