B-type star · blue-white star

HR 8490

HR 8490 is a blue-white star in the constellation Cepheus 1,305 ly from Earth. Its surface is about 11,391 K, about 2.0 times the Sun's surface temperature, and it shines at 492× the Sun's brightness. At magnitude 6.1 it is within reach of 50 mm binoculars; the light you see left it 1,305 years ago.

1,305 lybrightness mag 6.13B8Vn

Also catalogued as HD 211242 · HIP 109746

11,391 K
temperature
6.13
apparent magnitude
492× ☉
luminosity vs Sun
B8Vn
spectral type
Distance & comparison with our Sun
1,305 years
at light speed from Earth
1.97×
as hot as the Sun
492×
the Sun's light output
-1.88
absolute magnitude
Explore from here · roam the neighborhood
HR 8490B-type
Sky regionCepheusthis direction
StarHR 8707130 ly
StarHR 8808140 ly
StarHR 8803180 ly
StarAlderaminstar
StarErraistar
Nearest stars
Bright stars in Cepheus
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.1To see it 50 mm binocularsLook toward Cepheus

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.