Astronomy:Kalyke
 Kalyke imaged by the Canada-France-Hawaii Telescope in December 2001 | |
| Discovery [1] | |
|---|---|
| Discovered by | Scott S. Sheppard David C. Jewitt Yanga R. Fernandez Eugene A. Magnier |
| Discovery site | Mauna Kea Observatory |
| Discovery date | 23 November 2000 |
| Designations | |
Designation | Jupiter XXIII |
| Pronunciation | /ˈkæləkiː/[2] |
| Named after | Καλύκη Kalykē |
| S/2000 J 2 | |
| Adjectives | Kalykean /kæləˈkiːən/ |
| Orbital characteristics [3] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Observation arc | 16.34 yr (5,967 days) |
| 0.1614179 astronomical unit|AU (24,147,770 km) | |
| Eccentricity | 0.3028225 |
| Orbital period | −766.61 d |
| Mean anomaly | 63.16063° |
| Mean motion | 0° 28m 10.57s / day |
| Inclination | 165.93730° (to ecliptic) |
| Longitude of ascending node | 132.43876° |
| 323.78885° | |
| Satellite of | Jupiter |
| Group | Carme group |
| Physical characteristics | |
| Mean diameter | 6.9±1.3 km[4] |
| Albedo | 0.029±0.014[4] |
| Apparent magnitude | 21.8[5] |
| Absolute magnitude (H) | 15.4[3] |
Kalyke /ˈkæləkiː/, 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 in 2000, and given the temporary designation S/2000 J 2.[6][1]
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 766.61 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.[7]
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°. 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 captured centaur or TNO, or a remnant of such an object that collided with the Carme group progenitor.[8]
References
- ↑ 1.0 1.1 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)
- ↑ as 'Calyce' in Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ 3.0 3.1 "M.P.C. 115890". Minor Planet Circular. Minor Planet Center. 27 August 2019. https://minorplanetcenter.net/iau/ECS/MPCArchive/2019/MPC_20190827.pdf.
- ↑ 4.0 4.1 4.2 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. Bibcode: 2015ApJ...809....3G.
- ↑ Sheppard, Scott. "Scott S. Sheppard - Jupiter Moons". Department of Terrestrial Magnetism. Carnegie Institution for Science. https://sites.google.com/carnegiescience.edu/sheppard/moons/jupitermoons.
- ↑ IAUC 7555: Satellites of Jupiter 2001 January 5 (discovery)
- ↑ IAUC 7998: Satellites of Jupiter 2002 October 22 (naming the moon)
- ↑ 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. Bibcode: 2003Icar..166...33G.
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