翻訳と辞書
Words near each other
・ HAT-P-2b
・ HAT-P-3
・ HAT-P-32b
・ HAT-P-33
・ HAT-P-33b
・ HAT-P-3b
・ HAT-P-4
・ HAT-P-4b
・ HAT-P-5
・ HAT-P-5b
・ HAT-P-6
・ HAT-P-6b
・ HAT-P-7
・ HAT-P-7b
・ HAT-P-8
HAT-P-8b
・ HAT-P-9
・ HAT-P-9b
・ Hat-trick
・ Hat-trick (magic trick)
・ HAT-trie
・ Hat. (album)
・ HAT1
・ Hata
・ Hata (surname)
・ Hata -e- Sheikhan
・ Hata clan
・ Hata District, Kōchi
・ Hata Model
・ Hata model for open areas


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HAT-P-8b : ウィキペディア英語版
HAT-P-8b



HAT-P-8b is an extrasolar planet located approximately 750 light years away in the constellation of Pegasus, orbiting the 10th magnitude star GSC 02757-01152. This planet was discovered by transit on December 5, 2008. Despite the designation as HAT-P-8b, it is the 11th planet discovered by the HATNet Project. The mass of the planet is 50% more than Jupiter while the radius is also 50% more than Jupiter. The mass of this planet is exact since the inclination of the orbit is known, typical for transiting planets. This is a so-called “hot Jupiter” because this Jupiter-like gas giant planet orbits in a really close torch orbit around the star, making this planet extremely hot (in the order of a thousand kelvins). The distance from the star is roughly 20 times smaller than that of Earth from the Sun, which places the planet roughly 8 times closer to its star than Mercury is from the Sun. The “year” on this planet lasts only 3 days, 1 hour, 49 minutes, and 54 seconds, compared with Earth's 365 days, 6 hours, 9 minutes, and 10 seconds in a sidereal year.〔
== See also ==

*HATNet Project

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「HAT-P-8b」の詳細全文を読む



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