Triangulum Australe

Triangulum Australe is a small but bright constellation near the south celestial pole. Its three main stars form a nearly equilateral triangle that is easily recognizable. It contains the open cluster NGC 6025 and lies near Centaurus and Circinus.

Location in the Sky

When to Observe

Triangulum Australe is best observed during July. It is located in the SQ3 quadrant and is primarily visible from the southern hemisphere. The constellation contains 3 main stars forming its asterism, with 10 Bayer/Flamsteed designated stars in total. Its brightest star is Atria.

Mythology & History

Triangulum Australe was introduced by Dutch navigators Keyser and de Houtman as the southern counterpart to northern Triangulum. It was first depicted on a celestial globe by Petrus Plancius in 1589. Its three bright stars make it one of the easier southern constellations to identify.