Constellation · TrA
Triangulum Australe
The Southern Triangle
A small, bright triangle of three stars near Alpha Centauri.
Magnitude 1.91
Highest in the sky at 9 pm local time (summer in the northern hemisphere)
Latitudes where every part of it rises above the horizon at some time of year
The whole sky covers about 41,253 square degrees
Stars brighter than about magnitude 6, the naked-eye limit under dark skies
Named stars in Triangulum Australe
Brightest first. A lower magnitude means a brighter star.
- Atria (Alpha Trianguli Australis)mag 1.91
Can you see Triangulum Australe from where you live?
This depends only on your latitude. Pick the row nearest to you; for your exact sky tonight, use the sky map.
| Latitude | Triangulum Australe |
|---|---|
| 60°N | Never rises |
| 40°N | Never rises |
| 20°N | Only part of it ever clears the horizon |
| the equator | The whole constellation rises and sets |
| 20°S | The whole constellation rises and sets |
| 40°S | Visible all night, all year (it never sets) |
| 60°S | Visible all night, all year (it never sets) |
Questions about Triangulum Australe
When is Triangulum Australe best seen?
Triangulum Australe stands highest in the sky at 9 pm local time in July. That makes summer evenings the best time for observers in the northern hemisphere; in the southern hemisphere the season is reversed.
What is the brightest star in Triangulum Australe?
The brightest star in Triangulum Australe is Atria (Alpha Trianguli Australis), magnitude 1.91.
Where on Earth can you see Triangulum Australe?
The whole of Triangulum Australe can be seen from latitudes between about 90°S and 20°N. From 40°N: Never rises. From 35°S: Visible all night, all year (it never sets).
What does Triangulum Australe mean?
Triangulum Australe is Latin for "the Southern Triangle". Charted by Dutch navigators in the late 1500s.