
Alpha Trianguli Australis, known as Atria, is a second magnitude orange giant and the brightest star in the constellation, as well as the 42nd-brightest star in the night sky. Completing the triangle are the two white main sequence stars Beta and Gamma Trianguli Australis. Although the constellation lies in the Milky Way and contains many stars, d...
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http://en.wikipedia.org/wiki/Triangulum_Australe
[Chinese astronomy] The modern constellation Triangulum Australe is not included in the Three Enclosures and Twenty-Eight Mansions system of traditional Chinese uranography because its stars are too far south for observers in China to know about them prior to the introduction of Western star charts. Based on the work of Xu Guangqi and the G...
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http://en.wikipedia.org/wiki/Triangulum_Australe_(Chinese_astronomy)
(abbr. TrA, gen. Trianguli Australis) The Southern Triangle; a small constellation close to the southern circumpolar region and touched by the southern edge of the Milky Way. Its three leading stars are bright enough to serve as pointers to other constellations nearby, including...
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http://www.daviddarling.info/encyclopedia/T/TrA.html

In astronomy Triangulum Australe is a southern constellation placed by Bayer on the edge of the Milky Way. Its three principal stars make a diamond with AlphaCentauri. Its brightest star is of the second magnitude, and the constellation contains a number of short period variable and double stars.
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http://www.probertencyclopaedia.com/browse/AT.HTM

[
n] - a small bright constellation in the polar region of the southern hemisphere near Circinus and Apus
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http://www.webdictionary.co.uk/definition.php?query=Triangulum%20Australe
Southern Triangle noun a small bright constellation in the polar region of the southern hemisphere near Circinus and Apus
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https://www.encyclo.co.uk/local/20974
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