S/2003 J 12

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S/2003 J 12
Discovered by Scott S. Sheppard et al.
Discovery time 2003
Avgdistance from the center of its orbital path 17.740 million km
How egg-shaped its orbit is
How long it takes to complete an orbit 482.691 days
Angle above the reference plane
Size and Other Qualities
Average distance from its center to its surface ~0.5 km

S/2003 J 12 is a moon of Jupiter, and is the smallest known. It was found by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2003.[1][2]

S/2003 J 12 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[change | change source]