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・ 3/3/03 – Tokyo, Japan
・ 3/4
・ 3/40 Evzone Regiment
・ 3/5
・ 3/8
・ 3/8 (album)
・ 30
・ 30 (album)
・ 30 (disambiguation)
・ 30 (number)
・ 30 Albert Street, Brisbane
・ 30 Aniversario
・ 30 Aniversario (disambiguation)
・ 30 Anos de Chaves
・ 30 Aquarii
30 Arietis
・ 30 Arietis Bb
・ 30 Años
・ 30 Años Despues
・ 30 Battery (Rogers's Company) Royal Artillery
・ 30 BC
・ 30 Beats
・ 30 Boxes
・ 30 Bridge Street, Chester
・ 30 by Ella
・ 30 Camelopardalis
・ 30 Cannon Street
・ 30 cm Nebelwerfer 42
・ 30 cm Raketenwerfer 56
・ 30 Commando Information Exploitation Group


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30 Arietis : ウィキペディア英語版
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)
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