Callirrhoe (moon)

Callirrhoe
This discovery image of Callirrhoe taken by Spacewatch in October 1999
Discovery[1]
Discovered bySpacewatch[a]
Discovery siteKitt Peak National Observatory
Discovery date19 October 1999
Designations
Designation
Jupiter XVII
Pronunciation/kəˈlɪroʊiː/[3][4]
Named after
Καλλιρρόη Kallirrhoê
S/1999 J 1
1999 UX18
Orbital characteristics[5]
Epoch 27 April 2019 (JD 2458600.5)
Observation arc17.54 yr (6,406 days)
0.1643278 AU (24,583,090 km)
Eccentricity0.3095704
–787.43 d
240.90203°
0° 27m 25.866s / day
Inclination147.99790° (to ecliptic)
352.75480°
68.21981°
Satellite ofJupiter
GroupPasiphae group
Physical characteristics
9.6±1.3 km[6]
Albedo0.052±0.016[6]
20.8[7]
13.92±0.02[6]

Callirrhoe (/kəˈlɪroʊ.iː/; Greek: Καλλιρρόη), also known as Jupiter XVII, is one of Jupiter's outer natural satellites. It is an irregular moon that orbits in a retrograde direction. Callirrhoe was imaged by Spacewatch at Kitt Peak National Observatory from October 6 through November 4, 1999,[8] and originally designated as asteroid 1999 UX18.[9][10] 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.[1][11] It was the 17th confirmed moon of Jupiter.[8]

  1. ^ a b Cite error: The named reference IAUC7460 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Gazetteer was invoked but never defined (see the help page).
  3. ^ Noah Webster (1884). A Practical Dictionary of the English Language.
  4. ^ "Pasiphae". Dictionary.com Unabridged (Online). n.d.
  5. ^ Cite error: The named reference MPC115890 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Grav2015 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SheppardMoons was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference pr was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference moon1999 was invoked but never defined (see the help page).
  10. ^ MPS 7418 (Minor Planet Circulars Supplement); not available on-line
  11. ^ MPEC 2000-Y16: S/1975 J 1 = S/2000 J 1, S/1999 J 1 2000-12-19 (discovery and ephemeris)


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