K-type star · orange

HR 8557

HR 8557 is an orange in the constellation Cepheus 501 ly from Earth. Its surface is about 4,278 K, about 0.7 times the Sun's surface temperature, and it shines at 133× the Sun's brightness. At magnitude 5.5 it is bright enough to see with the naked eye; the light you see left it 501 years ago.

501 lybrightness mag 5.47K2III

Also catalogued as HD 213022 · HIP 110725

4,278 K
temperature
5.47
apparent magnitude
133× ☉
luminosity vs Sun
K2III
spectral type
Distance & comparison with our Sun
501 years
at light speed from Earth
0.74×
as hot as the Sun
133×
the Sun's light output
-0.46
absolute magnitude
Explore from here · roam the neighborhood
HR 8557K-type
Sky regionCepheusthis direction
StarHR 847322 ly
StarHR 834229 ly
StarHR 884464 ly
StarAlderaminstar
StarErraistar
Nearest stars
Bright stars in Cepheus
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.5To see it no equipment neededLook 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.