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HD 213240
HD 213240 is a yellow main sequence star located approximately 133 light years (41 parsecs) away in the constellation Grus. The magnitudes were m=6.80 and M=3.75. It is a metal-rich star and more evolved than our sun. Its age has been calculated as being anywhere from 2.7 to 4.6 billion years.〔 A red dwarf companion star was detected in 2005 with a projected separation of 3898 AU.〔 == Planetary system == The Geneva extrasolar planet search team discovered a planet orbiting this star in 2001.〔
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「HD 213240」の詳細全文を読む
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