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30 Arietis
30 Arietis (sometimes abbreviated 30 Ari) is a 6th-apparent-magnitude quadruple star〔 in the constellation Aries. 30 Arietis A and B are separated by 38.1" or about 1500 AU at a distance of 130 light years away. The main components of both systems are F-type main-sequence stars, meaning they are fusing hydrogen in their cores.〔 30 Arietis A is itself a spectroscopic binary with an orbital period of 1.1 days. The 30 Arietis system is 910 million years old, one fifth the age of the Sun. ==Planetary system== On November 27, 2009, the discovery of a very massive planet was announced to be orbiting 30 Arietis B at a distance of about 1 AU.〔
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「30 Arietis」の詳細全文を読む
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