B-type star · blue-white star

31 Cas

31 Cas is a blue-white star in the constellation Cassiopeia 277 ly from Earth. Its surface is about 10,303 K, about 1.8 times the Sun's surface temperature, and it shines at 46.73× the Sun's brightness. At magnitude 5.3 it is bright enough to see with the naked eye; the light you see left it 277 years ago.

277 lybrightness mag 5.32A0Vnn

Also catalogued as HR 336 · HD 6829 · HIP 5518

10,303 K
temperature
5.32
apparent magnitude
46.73× ☉
luminosity vs Sun
A0Vnn
spectral type
Distance & comparison with our Sun
277 years
at light speed from Earth
1.78×
as hot as the Sun
46.73×
the Sun's light output
0.68
absolute magnitude
Explore from here · roam the neighborhood
31 CasB-type
Sky regionCassiopeiathis direction
Star42 Cas16 ly
Star35 Cas30 ly
Star52 Cas31 ly
StarCihstar
StarSchedarstar
Nearest stars
Bright stars in Cassiopeia
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.3To 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.