B-type star · blue-white star

HR 266

HR 266 is a blue-white star in the constellation Cassiopeia 538 ly from Earth. Its surface is about 10,853 K, about 1.9 times the Sun's surface temperature, and it shines at 142× the Sun's brightness. At magnitude 5.6 it is bright enough to see with the naked eye; the light you see left it 538 years ago.

538 lybrightness mag 5.56B8V

Also catalogued as HD 5408 · HIP 4440

10,853 K
temperature
5.56
apparent magnitude
142× ☉
luminosity vs Sun
B8V
spectral type
Distance & comparison with our Sun
538 years
at light speed from Earth
1.88×
as hot as the Sun
142×
the Sun's light output
-0.53
absolute magnitude
Explore from here · roam the neighborhood
HR 266B-type
Sky regionCassiopeiathis direction
StarCih11 ly
StarHR 17759 ly
StarHR 14464 ly
StarSchedarstar
StarCaphstar
Nearest stars
Bright stars in Cassiopeia
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.6To see it no equipment neededLook toward Cassiopeia

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.