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july
20, 2000 |
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new moon of jupiter | |
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Astronomers confirmed, by orbital calculations,
that the object designated asteroid 1999 UX18 is not an asteroid orbiting
the Sun, but a previously unknown moon of Jupiter. Designated S/1999 J1 (*International Astronomical Union Circular 7460*), the moon belongs to a subgroup of outer satellites that make complete, eccentric orbits around Jupiter at an average distance of 15 million miles (24 million kilometers) every two years. With a diameter as small as 5 km, it would be the smallest known moon orbiting a planet in the solar system. If the discovery is confirmed, will be the 17th moon found at Jupiter. |
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{imago}
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source::
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New outer satellite of Jupiter discovered < http://cfa-www.harvard.edu/cfa/ps/pressinfo/S1999J1.html > | |
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