K-type star · orange
Theta TrA
Theta TrA is an orange in the constellation Triangulum Australe 342 ly from Earth. Its surface is about 4,869 K, about 0.8 times the Sun's surface temperature, and it shines at 60.53× the Sun's brightness. At magnitude 5.5 it is bright enough to see with the naked eye; the light you see left it 342 years ago.
Also catalogued as HR 6151 · HD 148890 · HIP 81252
4,869 K
temperature
5.50
apparent magnitude
60.53× ☉
luminosity vs Sun
G8/K0III
spectral type
Distance & comparison with our Sun
342 years
at light speed from Earth
0.84×
as hot as the Sun
60.53×
the Sun's light output
0.40
absolute magnitude
Explore from here · roam the neighborhood
Nearest stars
Bright stars in Triangulum Australe
Can you see it tonight?
VISIBLE TO THE NAKED EYE
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.