B-type star · blue-white star

7 Tri

7 Tri is a blue-white star in the constellation Triangulum 281 ly from Earth. Its surface is about 10,175 K, about 1.8 times the Sun's surface temperature, and it shines at 51.24× the Sun's brightness. At magnitude 5.3 it is bright enough to see with the naked eye; the light you see left it 281 years ago.

281 lybrightness mag 5.25A0V

Also catalogued as HR 655 · HD 13869 · HIP 10559

10,175 K
temperature
5.25
apparent magnitude
51.24× ☉
luminosity vs Sun
A0V
spectral type
Distance & comparison with our Sun
281 years
at light speed from Earth
1.76×
as hot as the Sun
51.24×
the Sun's light output
0.58
absolute magnitude
Explore from here · roam the neighborhood
7 TriB-type
Sky regionTriangulumthis direction
Star11 Tri14 ly
Star6 Tri19 ly
StarHR 73820 ly
StarBeta Tristar
StarMothallahstar
Nearest stars
Bright stars in Triangulum
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.3To see it no equipment neededLook toward Triangulum

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.