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HD 220074
HD 220074 is a M2III red giant star located in Cassiopeia.
It had been considered K1V but is now known as M2III due to radius and surface gravity.〔
==Planetary system==
From September 2008 to June 2012, the team B.-C. Lee, I. Han, and M.-G. Park observed HD 220074 with "the high-resolution spectroscopy of the fiber-fed Bohyunsan Observatory Echelle Spectrograph (BOES) at Bohyunsan Optical Astronomy Observatory (BOAO)".
In 2012, a long-period, wide-orbiting eccentric planet was deduced by radial velocity. This was published in November, gaining the designation HD 220074 b.〔 Along with HD 208527 b this is one of the first two planets proposed around a red giant.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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