Star
Atria
Orange star · K2IIb-IIIa
α Trianguli Australis · Triangulum Australe
Shown in its true colour — like most stars, it is too far away to photograph as more than a point of light.
Alpha Trianguli Australis, officially named Atria, is the brightest star in the southern constellation of Triangulum Australe, forming an apex of a triangle with Beta Trianguli Australis and Gamma Trianguli Australis that gives the constellation its name.
Description from Wikipedia (CC BY-SA 4.0).
In your sky
Share your location to see where this is in your sky right now.
Key facts
Distance
~391 light-years
Apparent mag.
+1.91
Spectral type
K2IIb-IIIa
Luminosity
2,152 × Sun
Absolute mag.
−3.48
Catalogue
HIP 82273
Spectral type
K2IIb-IIIa
True colour from its B–V index (1.45): a surface around 3900 K.
Did you know
- Atria is also known as α Trianguli Australis.
- Its spectral type K2IIb-IIIa marks it as a orange star.
- It lies in the constellation Triangulum Australe.
