B-type star · blue-white star

Rho Her

Rho Her is a blue-white star in the constellation Hercules 393 ly from Earth. Its surface is about 10,265 K, about 1.8 times the Sun's surface temperature, and it shines at 277× the Sun's brightness. At magnitude 4.2 it is bright enough to see with the naked eye; the light you see left it 393 years ago.

393 lybrightness mag 4.15B9.5III

Also catalogued as HR 6484 · HD 157778 · HIP 85112

10,265 K
temperature
4.15
apparent magnitude
277× ☉
luminosity vs Sun
B9.5III
spectral type
Distance & comparison with our Sun
393 years
at light speed from Earth
1.78×
as hot as the Sun
277×
the Sun's light output
-1.26
absolute magnitude
Explore from here · roam the neighborhood
Rho HerB-type
Sky regionHerculesthis direction
StarPi Her21 ly
StarHR 652842 ly
StarHR 671153 ly
StarKornephorosstar
StarRasalgethistar
Nearest stars
Bright stars in Hercules
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 4.2To 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.