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V1472 Aquilae : ウィキペディア英語版 | V1472 Aquilae
V1472 Aquilae is a semi-regular pulsating star in the constellation Aquila. It is actually a binary star system, the main component being a red giant of spectral type M2.5 III. Original calculations using hipparcos data gave a parallax of 7.92 ± 1.07 milliarcseconds, but reprocessing to allow for orbital motion adjusts the parallax to 2.4 ± 1.0 milliarcseconds—tripling the system's distance from Earth. The main star has a diameter 104 ± 56 times and luminosity 1100 times that of the Sun. The stars orbit each other every 196 days. ==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「V1472 Aquilae」の詳細全文を読む
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