The Constellation Directory

Triangulum Australe

"The Southern Triangle"

Triangulum Australe

By IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) [CC-BY-3.0], via Wikimedia Commons

Abbreviation: TrA
Genitive: Trianguli Australis
Constellation family: Hercules
Nearest constellations: Apus, Ara, Circinus, and Norma
Right ascension: 16.08h
Declination: -65.91°
Visible between latitudes: +15° and -90°
Square degrees: 110
Luminary: Atria (Alpha Trianguli Australis)
Named stars: Atria
Notable deep sky objects: NGC 6025


Triangulum Australe is a small constellation in the Southern Hemisphere that is best seen in July. It was first introduced in 1603 when Johann Bayer's star atlas Uranometria was first published.


There is no mythology associated with this constellation.