S/2003 J 2

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S/2003 J 2
Discovered by University of Hawaii team led by Scott S. Sheppard and David C. Jewitt
Discovery time March 4, 2003
How egg-shaped its orbit is
How long it takes to complete an orbit 981.55 d (60.48 a)
Angle above the reference plane
154° (to the ecliptic)
152° (to Jupiter's equator)
What it orbits Jupiter

S/2003 J 2 is an unnamed non-spherical moon of Jupiter. It was found by a team of astronomers from the University of Hawaii led by Scott S. Sheppard and David C. Jewitt and was announced on March 4, 2003 [1][2] As of 2006, it is Jupiter's farthest known moon.

S/2003 J 2 is about two kilometres in diameter, and orbits Jupiter at an average distance of 29,540,000 km in 980 days, at an inclination of 154° to the ecliptic (152° to Jupiter's equator) and with an orbital eccentricity of 0.2255.[3][4][5]

It seems to belong to a group all of its own, with semi-major axis ~30,000,000 km and inclination ~160°.[4]

References[change | change source]

  1. IAUC 8087: Satellites of Jupiter 2003 March 4 (discovery)
  2. Sheppard, S. S.; and Jewitt, D. C.; An Abundant Population of Small Irregular Satellites Around Jupiter, Nature, Vol. 423 (May 2003), pp. 261-263
  3. MPEC 2003-E11: S/2003 J 1, 2003 J 2, 2003 J 3, 2003 J 4, 2003 J 5, 2003 J 6, 2003 J 7 2003 March 4 (discovery and ephemeris)
  4. 4.0 4.1 Mean orbital elements from NASA JPL (August 2006)
  5. Current (2004 July 14, JD= 2453200.5) orbital elements as reported by IAU-MPC NSES are a= 0.2024818 AU, e=0.1882469 i=153.52114