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Zeta Trianguli Australis
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Zeta Trianguli Australis : ウィキペディア英語版
Zeta Trianguli Australis


Zeta Trianguli Australis (ζ TrA) is a spectroscopic binary in the constellation Triangulum Australe. It is approximately 39.5 light years from Earth.
The binary's composite spectral class is F9V and its combined apparent magnitude is +4.90. The pair orbit each other once every 13 days, and the orbital eccentricity is a low 0.014, making it nearly circular.〔
Somewhat surprisingly for a star located at 70° S, it is a candidate swarm member of the Ursa Major moving group. However, there is some evidence to the contrary.〔
==References==




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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