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WASP-17
WASP-17 is an F-type main sequence star approximately 1,000 light-years away in the constellation Scorpius.〔〔http://www.space.com/scienceastronomy/090812-backward-planet.html〕 As of 2009, an extrasolar planet has been confirmed to orbit the star. The planet is thought to orbit in a retrograde orbit (in the opposite direction to the star's rotation). == Planetary system ==
(詳細はexoplanet, WASP-17b,〔(BBC NEWS | Science & Environment | )〕〔(New-found Planet Orbits Backward )〕 which is believed to orbit in the opposite direction to the star's spin and is said to be twice the size of Jupiter, but half its mass. The planet was discovered by the SuperWASP project, hence the name.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「WASP-17」の詳細全文を読む
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