Triangulum Australe

Triangulum Australe is a small constellation in the southern sky, named for its three bright stars arranged in a triangle.

Connect

Atria: Atria is the brightest star in Triangulum Australe, a luminous orange giant. It marks the southern vertex of the constellation’s triangular outline.
Petrus Plancius: Petrus Plancius was a Dutch-Flemish astronomer and cartographer who helped establish several southern constellations. His celestial globe of 1589 is associated with the constellation’s early depiction.
NGC 6025: NGC 6025 is an open star cluster in Triangulum Australe. It is the constellation’s most prominent bright deep-sky object.
Triangulum: Triangulum is a small constellation in the northern sky, also named for a triangular star pattern. It shares the triangle motif but lies north of the celestial equator.
Beta Trianguli Australis: Beta Trianguli Australis is a binary star system and the second-brightest star in Triangulum Australe. It forms one of the triangle’s other prominent vertices.
Frederick de Houtman: Frederick de Houtman was a Dutch navigator whose southern-sky observations contributed to early star catalogs. His observations helped transmit knowledge of southern stars to European astronomy.
NGC 5979: NGC 5979 is a compact planetary nebula in Triangulum Australe. Its small, bright appearance makes it a target for telescopic observation.
Crux: Crux is the smallest of the 88 constellations and is commonly known as the Southern Cross. Its compact, bright pattern is another familiar southern-sky landmark, but forms a cross.
Gamma Trianguli Australis: Gamma Trianguli Australis is a white main-sequence star in Triangulum Australe. It completes the conspicuous three-star figure.
Johann Bayer: Johann Bayer was a German lawyer and celestial cartographer who published the star atlas Uranometria. Uranometria’s 1603 map helped popularize Triangulum Australe.