// Constellation
Triangulum Australe
“Southern Triangle”
- Latin name
- Triangulum Australe (TrA)
- Best visibility
- evenings in July
- Fully visible between
- 20° N – 90° S
- Naked-eye stars
- 21
Triangulum Australe is highest in the evening sky (around 9 pm) in July. The whole constellation rises above the horizon between 20° N and 90° S. Its brightest star is Atria at magnitude 1.91 — about 391 light-years away.
The brightest stars
| Star | Designation | Magnitude | Distance |
|---|---|---|---|
| Atria | α TrA | 1.91 | 391 ly |
| — | β TrA | 2.83 | 40 ly |
| — | γ TrA | 2.87 | 184 ly |
| — | δ TrA | 3.86 | 607 ly |
| — | ε TrA | 4.11 | 202 ly |
| — | ζ TrA | 4.9 | 40 ly |
More constellations
Star data: HYG database. Constellation borders: IAU.