B-type star · blue-white star

HR 7978

HR 7978 is a blue-white star in the constellation Cygnus 726 ly from Earth. Its surface is about 11,107 K, about 1.9 times the Sun's surface temperature, and it shines at 135× the Sun's brightness. At magnitude 6.3 it is within reach of 50 mm binoculars; the light you see left it 726 years ago.

726 lybrightness mag 6.26B8np

Also catalogued as HD 198513 · HIP 102712

11,107 K

temperature

6.26

apparent magnitude

135× ☉

luminosity vs Sun

B8np

spectral type

Distance & comparison with our Sun

726 years

at light speed from Earth

1.92×

as hot as the Sun

135×

the Sun's light output

-0.48

absolute magnitude

Explore from here · roam the neighborhood

HR 7978B-type

Sky regionCygnusthis direction

Nearest stars

Bright stars in Cygnus

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BINOCULARS NEEDED

Brightness mag 6.3To see it 50 mm binocularsLook toward Cygnus

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.