S/2003 J 2
From Wikipedia, the free encyclopedia
S/2003 J 2 is a retrograde irregular satellite of Jupiter. The discovery, by a team of astronomers from the University of Hawaii led by Scott S. Sheppard and David C. Jewitt, was announced on March 4 2003 [2][3] As of 2006, it is Jupiter's outermost known moon. S/2003 J 2 is about 2 kilometres in diameter, and orbits Jupiter at an average distance of 29.54 Gm (million km) in 980 days, at an inclination of 154° to the ecliptic (152° to Jupiter's equator) and with an eccentricity of 0.2255.[4][5][6] It seems to belong to a group all of its own, with semi-major axis ~30 Gm and inclination ~160°.[5] The limits of Jupiter's gravitational influence are defined by its Hill sphere, whose radius is 52 gigametres. Retrograde moons with axes up to 67% of Hill radius are believed to be stable. Consequently, it is possible that even more distant moons of Jupiter may be discovered. References
br:S/2003 J 2 da:S/2003 J 2 de:S/2003 J 2 es:S/2003 J 2 fr:S/2003 J 2 hr:S/2003 J 2 it:S/2003 J 2 lt:S/2003 J 2 ja:S/2003 J 2 pl:S/2003 J 2 simple:S/2003 J 2 sk:S/2003 J 2 sl:S/2003 J 2 fi:S/2003 J 2 sv:S/2003 J2 | |||||||||||||||||||||||||||||||||||||||||||||
