B-type star · blue-white star
12 Cas
12 Cas is a blue-white star in the constellation Cassiopeia 701 ly from Earth. Its surface is about 10,027 K, about 1.7 times the Sun's surface temperature, and it shines at 284× the Sun's brightness. At magnitude 5.4 it is bright enough to see with the naked eye; the light you see left it 701 years ago.
Also catalogued as HR 93 · HD 2011 · HIP 1960
10,027 K
temperature
5.38
apparent magnitude
284× ☉
luminosity vs Sun
B9III
spectral type
Distance & comparison with our Sun
701 years
at light speed from Earth
1.74×
as hot as the Sun
284×
the Sun's light output
-1.28
absolute magnitude
Explore from here · roam the neighborhood
Nearest stars
Can you see it tonight?
VISIBLE TO THE NAKED EYE
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.