Star Names:

Triangulum Australe


Map of The Constellation of Triangulum Australe
Please hover over any star to get more information
Triangulum Australe is a very small constellation in the southern hemisphere. It was introduced by the Dutch astronomer Petrus Plancius from the observations of 16th century Dutch navigators, and it first appeared in a celestial atlas in German uranographer Johann Bayer's Uranometria in 1603. In Latin, Triangulum Australe means "the southern triangle." The three brightest stars in the constellation form a nearly equilateral triangle.

The constellation Triangulum Australe occupies an area of 110 square degrees and contains one star with known planets. It can be seen at latitudes between +25° and -90° and is best visible at 9 p.m. during the month of July.

The brightest star in the constellation is [8230] alpha Trianguli Australis, also known as Atria, which is just a contraction of its designation. It is an orange bright giant 415 light-years distant and a suspected binary star.

[8231] beta Trianguli Australis is a binary star consisting of a yellow-white giant and a faint, magnitude 14 companion star. The system is about 40.1 light-years distant.

[8232] gamma Trianguli Australis is a white dwarf approximately 183 light-years distant.

[8233] delta Trianguli Australis is another binary star, 621 light-years away from Earth. It consists of a yellow supergiant and a magnitude 12 companion. The primary component has an apparent magnitude of 3.86.

[8239] iota Trianguli Australis is a triple star lying about 132 light-years away. The primary component consists of two yellow-white stars and the third component is a faint, magnitude 10 star.

[8240] theta Trianguli Australis is a yellow giant that lies about 328 light-years from Earth.

Triangulum Australe also contains a notable deep sky object. NGC 6025 is an open star cluster consisting of about 30 stars between 7th and 9th magnitude. The cluster lies approximately 2,700 light-years away. It was first discovered by the French astronomer Nicolas Louis de Lacaille in the 18th century.

Triangulum Australe belongs to the Hercules family of constellations, along with Hercules, Sagitta, Aquila, Lyra, Cygnus, Vulpecula, Hydra, Sextans, Crater, Corvus, Ophiuchus, Serpens, Scutum, Centaurus, Lupus, Corona Australis, Ara and Crux.

Constellations directly bordering Triangulum Australe are Norma, Ara, Circinus and Apus.




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