HD209458 -- AMIGA Astronomy

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Subject: HD209458

Author:
blobrana

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Date Posted: 11:48:57 03/13/03 Thu

The Hubble Space Telescope (HST) has observed a planet being destroyed because it orbits too close to its parent star.
It`s atmosphere is literally being blasted away...
HD209458, is located about 137 light years away, in the constellation of Orion, and similar to our Sun. Its planet, HD209458b,was discovered in 1999, and similar to Jupiter.

About 15% of extra-solar planets orbit very close to their parent stars, typically with periods of a few days. HD209458b, for example, has a "year" that lasts only 3.5 days.
It seem pretty obvious, but it could explain why the largest planets of star systems are usually found to be orbiting at a much greater distances

Because HD209458b is only seven million kilometres (4.3 million miles) from its star, astronomers call it a "hot Jupiter".

But not for long i think...

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