 Kalyke imaged by the Canada-France-Hawaii Telescope in December 2001 | |
| Discovery | |
|---|---|
| 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/ |
| Named after | Καλύκη Kalykē |
| Alternative names | S/2000 J 2 |
| Adjectives | Kalykean /kæləˈkiːən/ |
| Orbital characteristics | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Observation arc | 16.34 yr (5,967 days) |
| Semi-major axis | 0.1614179 AU (24,147,770 km) |
| Eccentricity | 0.3028225 |
| Orbital period (sidereal) | −766.61 d |
| Mean anomaly | 63.16063° |
| Mean motion | 0° 28 10.57 / day |
| Inclination | 165.93730° (to ecliptic) |
| Longitude of ascending node | 132.43876° |
| Argument of perihelion | 323.78885° |
| Satellite of | Jupiter |
| Group | Carme group |
| Physical characteristics | |
| Mean diameter | 6.9±1.3 km |
| Albedo | 0.029±0.014 |
| Apparent magnitude | 21.8 |
| Absolute magnitude (H) | 15.4 |
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.
From infrared thermal measurements by the WISE spacecraft, Kalyke's albedo is measured at 2.9%, corresponding to a diameter of 6.9 kilometres. 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.
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.
Notes
- as 'Calyce' in Webster, Noah (1884). A Practical Dictionary of the English Language.
References
- ^ 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)
- ^ "M.P.C. 115890" (PDF). Minor Planet Circular. Minor Planet Center. 27 August 2019.
- ^ 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. arXiv:1505.07820. Bibcode:2015ApJ...809....3G. doi:10.1088/0004-637X/809/1/3. S2CID 5834661. 3.
- Sheppard, Scott. "Scott S. Sheppard - Jupiter Moons". Department of Terrestrial Magnetism. Carnegie Institution for Science. Retrieved 26 November 2020.
- IAUC 7555: Satellites of Jupiter Archived 2002-09-16 at the Wayback Machine 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. arXiv:astro-ph/0301016. Bibcode:2003Icar..166...33G. doi:10.1016/j.icarus.2003.07.005. S2CID 7793999.
| Moons of Jupiter | |
|---|---|
| Listed in increasing approximate distance from Jupiter | |
| Inner moons | |
| Galilean moons | |
| Themisto | |
| Himalia group (9) | |
| Carpo group (2) | |
| Valetudo | |
| Ananke group (26) | |
| Carme group (30) | |
| Pasiphae group (18) | |
| See also | |
