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45 Aquilae
45 Aquilae is the Flamsteed designation for a triple star system in the equatorial constellation of Aquila. It is located away from Earth, give or take a 30 light-year margin of error, and has an apparent visual magnitude of 5.7.〔 Based upon a stellar classification of A3 IV,〔 the primary component of this system is a subgiant star that is in the process of evolving away from the main sequence. It has an orbiting companion with a period of 20.31 years and an eccentricity of 0.054. At an angular separation of 42.2 arcseconds from this pair is a 12.7 magnitude tertiary companion.〔 ==References==
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「45 Aquilae」の詳細全文を読む
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