B-type star · blue-white star

Phi Her

Phi Her is a blue-white star in the constellation Hercules 204 ly from Earth. Its surface is about 10,724 K, about 1.9 times the Sun's surface temperature, and it shines at 69.25× the Sun's brightness. At magnitude 4.2 it is bright enough to see with the naked eye; the light you see left it 204 years ago.

204 lybrightness mag 4.23B9MNp...

Also catalogued as HR 6023 · HD 145389 · HIP 79101

10,724 K

temperature

4.23

apparent magnitude

69.25× ☉

luminosity vs Sun

B9MNp...

spectral type

Distance & comparison with our Sun

204 years

at light speed from Earth

1.86×

as hot as the Sun

69.25×

the Sun's light output

0.25

absolute magnitude

Explore from here · roam the neighborhood

Phi HerB-type

Sky regionHerculesthis direction

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.