WASP-18 System

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Exoplanetary Scratchpad

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A hot F6 star that has Super Jupiter that is only 2.5 stellar radii from its host star. It may perish soon once it reaches its star's roche limit, but astronomers are puzzled why it hasn't already. Because it orbits much faster than its star rotates, tidal effects should be causing it to fall inwards. Further observations should reveal its rate of decay. Has the shortest period of any Hot Jupiter at the time of its discovery (22hours).

WASP-18 System Web Pages

WASP-18 System In the News

Planet in Imminent Danger (Aug 2009)

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