S/2003 J 12

is a moon of Jupiter, and is one of the smallest known. It was found by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2003.IAUC 8089: Satellites of Jupiter 2003 March 7 (discovery)MPEC 2003-E29: S/2003 J 9, 2003 J 10, 2003 J 11, 2003 J 12; S/2003 J 1, 2003 J 6 2003 April 3 (discovery and ephemeris)

 is about 1 kilometre in diameter, and orbits Jupiter at an average distance of 17,740,000 km in 482.691 days, at an inclination of 143° to the ecliptic (143° to Jupiter's equator), with an orbital eccentricity of 0.4449.

It is the closest of the farther non-spherical retrograde moons of Jupiter, and does not seem to belong to any group.

 References 

Category:Jupiter's moons