Star profile
Eta 1 Trianguli Australis
Hot blue starWhat is Eta 1 Trianguli Australis
Eta-1 Trianguli Australis is a blue main-sequence star in the Southern Triangle, a simple three-pointed tracing in the southern sky. It moves at some forty kilometres per second, a peculiar velocity that sets it apart from its surroundings: a migrant star crossing this corner of the south, far from where it was born.
Where it is and when to see it
Eta 1 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 56° up.
It can be seen from anywhere south of 22° N.
It ranks no. 20 in brightness among the 21 stars of Triangulum Australe in our catalogue. To find it, start from Atria, the brightest: it lies about 1° away (a fist at arm's length covers about 10°).
The light you see today left it about 660 years ago.
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Astronomical data for Eta 1 Trianguli Australis
- Constellation
- Triangulum Australe
- Apparent magnitude
- 5.89
- Distance
- 661.7 light years
- Coordinates (J2000)
- RA 250.346° · Dec -68.296°
- Catalogue
- HIP 81710 · HD 149671
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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
- Beta Trianguli Australis2.83
- Gamma Trianguli Australis2.87
- HIP 741845.76
- HIP 780455.76
- HIP 831505.79
- HIP 755655.89
- HIP 797975.95