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HIP 12961
HIP 12961 is a dim red dwarf star located approximately 75 light-years away〔 in the constellation of Eridanus. It is one of the largest and brightest M class red dwarf stars known. In 2009 an extrasolar planet orbiting this faint star has been announced. == Planetary system ==
HIP 12961 b is an extrasolar planet which orbits the star. This planet has at least half the mass of Jupiter and takes over eight weeks to orbit the star at a semimajor axis of approximately 0.25 AU. The planet's existence was announced in a press release in October 2009.
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「HIP 12961」の詳細全文を読む
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