When is the best time to observe Gamma Trianguli Australis?

Gamma Trianguli Australis is best observed from April through June, with peak visibility during May when it transits around midnight in the Northern Hemisphere.

Where is Gamma Trianguli Australis located in the sky?

Gamma Trianguli Australis lies in the constellation Triangulum Australe at right ascension 15h 19m and declination -68° 41′.

What telescope do I need to see Gamma Trianguli Australis?

At magnitude 2.9, Gamma Trianguli Australis is visible to the naked eye from dark skies, easy in any binoculars.

Gamma Trianguli Australis — Star in Triangulum Australe

Magnitude 2.9^m Star Triangulum Australe (TrA) Visible

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About Gamma TrA

Description

Gamma Trianguli Australis is a white main-sequence star of spectral type A1V at magnitude 2.89 in Triangulum Australe. Located about 183 light-years from Earth, it has a luminosity of roughly 55 times solar. It is the faintest of the three main stars forming the small equilateral triangle.

Observing Tips

Gamma TrA completes the compact triangle of Triangulum Australe, with Atria (Alpha) and Beta TrA. It is a white star easy to spot near Alpha and Beta Centauri. Only visible from the southern hemisphere. Best observed April through August.

History

Gamma TrA has no traditional proper name. Triangulum Australe is one of the most easily recognized small southern constellations due to its compact, regular shape.

Fun Facts

The three stars of Triangulum Australe span a wide range of types — a cool orange giant (Alpha), a warm F-type giant (Beta), and a hot A-type star (Gamma) — making the triangle a showcase of different stellar evolutionary stages in one compact group.