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S/2003 J 18

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S/2003 J 18

S/2003 J 18 is a natural satellite of Jupiter. It was discovered by a team of astronomers led by Brett J. Gladman in 2003.[1][2]

S/2003 J 18 is about 2 kilometres in diameter, and orbits Jupiter at an average distance of 19,813 Mm in 569.728 days, at an inclination of 147° to the ecliptic (149° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.1570.

It belongs to the Ananke group, retrograde irregular moons which orbit Jupiter between 19.3 and 22.7 Gm, at inclinations of roughly 150°.

References

  1. ^ Satellites of Jupiter and SaturnIAUC 8116: 2003 April (discovery)
  2. ^ S/2003 J 18MPEC 2003-G20: 2003 April (discovery and ephemeris)
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