Callirrhoe (kə-lirr'-oe-ee, IPA: /kəˈlɪrəʊi/; Greek Καλλιρρόη), or Jupiter XVII, is one of Jupiter's outermost named natural satellites. It was discovered by Spacewatch on October 6, 1999 and originally designated as an asteroid (1999 UX18).[1] It was discovered to be in orbit around Jupiter by Tim Spahr on July 18, 2000, and then given the designation S/1999 J 1.[2][3] Callirrhoe is about 8.6 kilometres in diameter, and orbits Jupiter at an average distance of 24,356 Mm in 776.543 days, at an inclination of 141° to the ecliptic (140° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.264. It was named in October 2002 after Callirhoe, daughter of the river god Achelous, one of Zeus' (Jupiter's) many conquests.[4] It belongs to the Pasiphaë group, irregular retrograde moons orbiting Jupiter at distances ranging between 22.8 and 24.1 Gm, and with inclinations ranging between 144.5° and 158.3°. As a navigation exercise, the New Horizons spacecraft imaged it on January 10, 2007.
References
- ^ MPS 7418 (Minor Planet Circulars Supplement); not available on-line
- ^ IAUC 7460: S/1999 J 1 2000 July 20 (discovery)
- ^ MPEC 2000-Y16: S/1975 J 1 = S/2000 J 1, S/1999 J 1 2000 December 19 (discovery and ephemeris)
- ^ IAUC 7998: Satellites of Jupiter 2002 October 22 (naming the moon)
|
|
|
|---|---|
| Listed in increasing distance from Jupiter. Temporary names in italics. | |
| Amalthea group | Metis · Adrastea · Amalthea · Thebe |
| Galilean moons | Io · Europa · Ganymede · Callisto |
| Themisto | |
| Himalia group | Leda · Himalia · Lysithea · Elara · S/2000 J 11 |
| Carpo · S/2003 J 12 | |
| Ananke group | Ananke · Praxidike · Harpalyke · Iocaste · Euanthe · Thyone (core) Euporie · S/2003 J 3 · S/2003 J 18 · Thelxinoe · Helike · Orthosie · S/2003 J 16 · Hermippe · Mneme · S/2003 J 15 (peripheral) |
| Carme group | S/2003 J 17 · S/2003 J 10 · Pasithee · Chaldene · Arche · Isonoe · Erinome · Kale · Aitne · Taygete · S/2003 J 9 · Carme · S/2003 J 5 · S/2003 J 19 · Kalyke · Eukelade · Kallichore |
| Pasiphaë group | Eurydome · S/2003 J 23 · Hegemone · Pasiphaë · Sponde · Cyllene · Megaclite · S/2003 J 4 · Callirrhoe · Sinope · Autonoe · Aoede · Kore |
| S/2003 J 2 | |
| Rings of Jupiter | |
