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Triangulum Australe, "The Southern Triangle", is
one of the few constellations which has an obvious asterism. It was introduced
by Johann Bayer in 1603.
The half-dozen Bayer stars range from 1.9 to
5.9 visual magnitude.
Double stars:
[Note: See the Binocular Section link, at the bottom of the page]
Variable stars:
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R TrA is a cepheid varying from 6.0 to 6.8 every 3.4 days.
S TrA has a copper tint to it; this is a cepheid varying from 6.1
to 6.7 every 6.3 days. It's located less than one degree SE of beta TrA.
Deep Sky Objects:
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NGC 6025 is a fairly bright open cluster of about thirty stars;
it's found three degrees NNE of beta Trianguli Australis.
For a little more on Triangulum Australe visit the Binocular Section.
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