B-type star · blue-white star

45 Her

45 Her is a blue-white star in the constellation Hercules 393 ly from Earth. Its surface is about 10,138 K, about 1.8 times the Sun's surface temperature, and it shines at 103× the Sun's brightness. At magnitude 5.2 it is bright enough to see with the naked eye; the light you see left it 393 years ago.

393 lybrightness mag 5.22B9p (Cr)

Also catalogued as HR 6234 · HD 151525 · HIP 82216

10,138 K
temperature
5.22
apparent magnitude
103× ☉
luminosity vs Sun
B9p (Cr)
spectral type
Distance & comparison with our Sun
393 years
at light speed from Earth
1.76×
as hot as the Sun
103×
the Sun's light output
-0.19
absolute magnitude
Explore from here · roam the neighborhood
45 HerB-type
Sky regionHerculesthis direction
Star28 Her27 ly
Star21 Oph31 ly
StarHR 632933 ly
StarKornephorosstar
StarRasalgethistar
Nearest stars
Bright stars in Hercules
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.2To see it no equipment neededLook toward Hercules

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.