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HD 109271
HD 109271 is an old yellow main-sequence dwarf star. ==Planetary system== From 2003 to 2012, the star was under observance from HARPS. In 2012, two eccentric hot Neptune-mass planets were deduced by radial velocity. They were published in January 2013. These are close to a 1:4 resonance. The system is like HD 69830. A third Neptune in the Venus zone was hypothesised from the data.
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 109271」の詳細全文を読む
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