Star profile
Beta Trianguli Australis
Nearby starWhat is Beta Trianguli Australis
Beta Trianguli Australis shines as the brightest jewel of the small Southern Triangle, a constellation that only reveals itself from southern latitudes. Just 40 light-years away, it is an F-type subgiant that has already begun to swell after burning through the hydrogen in its core. Its golden-white light crosses a distance roughly nine times that of Vega, and watching it is to glimpse the fate awaiting the Sun several billion years from now.
Where it is and when to see it
Beta Trianguli Australis lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is June, when it culminates around midnight.
- From London it never rises above the horizon.
- From New York it never rises above the horizon.
- From Sydney it never sets and culminates about 60° up.
It can be seen from anywhere south of 27° N.
It ranks no. 2 in brightness among the 21 stars of Triangulum Australe in our catalogue. To find it, start from Atria, the brightest: it lies about 8° away (a fist at arm's length covers about 10°).
The light you see today left it about 40 years ago.
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Astronomical data for Beta Trianguli Australis
- Constellation
- Triangulum Australe
- Apparent magnitude
- 2.83
- Distance
- 40.4 light years
- Coordinates (J2000)
- RA 238.786° · Dec -63.431°
- Catalogue
- HIP 77952 · HD 141891
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Other stars in Triangulum Australe
Triangulum Australe has 21 stars in Stelvia's catalogue. Here are a few of them.
- AtriaAlpha Trianguli Australis1.91
- Gamma Trianguli Australis2.87
- Delta Trianguli Australis3.86
- Epsilon Trianguli Australis4.11
- Zeta Trianguli Australis4.90
- HIP 821295.10
- Kappa Trianguli Australis5.11
- HIP 808745.19