B-type star · blue-white star

Eta¹ TrA

Eta¹ TrA is a blue-white star in the constellation Triangulum Australe 662 ly from Earth. Its surface is about 11,216 K, about 1.9 times the Sun's surface temperature, and it shines at 158× the Sun's brightness. At magnitude 5.9 it is bright enough to see with the naked eye; the light you see left it 662 years ago.

662 lybrightness mag 5.89B7IV

Also catalogued as HR 6172 · HD 149671 · HIP 81710

11,216 K
temperature
5.89
apparent magnitude
158× ☉
luminosity vs Sun
B7IV
spectral type
Distance & comparison with our Sun
662 years
at light speed from Earth
1.94×
as hot as the Sun
158×
the Sun's light output
-0.65
absolute magnitude
Explore from here · roam the neighborhood
Eta¹ TrAB-type
Sky regionTriangulum Australethis direction
StarHR 620438 ly
StarDelta TrA80 ly
StarHR 588490 ly
StarAtriastar
StarBeta TrAstar
Nearest stars
Bright stars in Triangulum Australe
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.9To see it no equipment neededLook toward Triangulum Australe

Star data from the HYG database v4.2 (Astronexus, CC BY-SA 4.0). Temperature and colour computed by gravityfinder from the B-V colour index; the illustration is generated from that temperature, not a photograph.