Ijiraq (satélite)

Ijiraq
Satélite Saturno XXII

Imagens de descoberta de Ijiraq.
Características orbitais[1]
Semieixo maior 11 367 400 km
Excentricidade 0,4580
Período orbital 451,52 d (1,24 a)
Inclinação 47,123 °
Argumento do periastro 67,015°
Longitude do nó ascendente 153,384°
Características físicas[2]
Diâmetro equatorial 12 km
Densidade média 2,3 g/cm³
Albedo 0,06
Magnitude aparente 22,6

Ijiraq, também conhecido como Saturno XXII, é um satélite natural prógrado de Saturno. Foi descoberto por Brett Gladman, John J. Kavelaars, et al. em 2000, e recebeu a designação provisória S/2000 S 6.[3][4] Foi nomeado em agosto de 2003 a partir de ijiraq, uma criatura da mitologia inuíte.[5]

Ijiraq tem cerca de 12 km de diâmetro,[2] e orbita Saturno a uma distância média de 11 367 400 km em 451,52 dias, com uma inclinação de 47,123° e uma de excentricidade de 0,4580.[1]

Referências

  1. a b «Planetary Satellite Mean Orbital Parameters». Jet Propulsion Laboratory. Consultado em 26 de fevereiro de 2011 
  2. a b «Planetary Satellite Physical Parameters». Jet Propulsion Laboratory. Consultado em 26 de fevereiro de 2011 
  3. IAUC 7521: S/2000 S 5, S/2000 S 6 18 de novembro de 2000 (descoberta)
  4. MPEC 2000-Y14: S/2000 S 3, S/2000 S 4, S/2000 S 5, S/2000 S 6, S/2000 S 10 19 de dezembro de 2000 (descoberta e efemérides)
  5. IAUC 8177: Satellites of Jupiter, Saturn, Uranus 8 de agosto de 2003 (nomeando a lua)
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