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S/2003 J 19 | |
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Discovered by | Brett J. Gladman |
Date of discovery | 2003 |
S/2003 J 19 is a natural satellite of Jupiter. It was discovered by Brett J. Gladman and his team at the Mauna Kea Observatory in Hawaii in February 2003. S/2003 J 19 is a member of the Carme group, a family of Jovian satellites which have similar orbits and appearance and are therefore thought to have a common origin. The group probably began as a D-type asteroid (possibly from the Hilda family or the Jupiter Trojans) that suffered a collision, which broke off a number of pieces, either before or after being captured by Jupiter’s gravity. S/2003 J19 has a mean radius of less than a mile (about one kilometre) and takes about 740 Earth days to complete one orbit around Jupiter.