B-type star · blue-white star
43 Cas
43 Cas is a blue-white star in the constellation Cassiopeia 389 ly from Earth. Its surface is about 10,781 K, about 1.9 times the Sun's surface temperature, and it shines at 73.18× the Sun's brightness. At magnitude 5.6 it is bright enough to see with the naked eye; the light you see left it 389 years ago.
Also catalogued as HR 478 · HD 10221 · HIP 7965
10,781 K
temperature
5.57
apparent magnitude
73.18× ☉
luminosity vs Sun
A0p SiSr
spectral type
Distance & comparison with our Sun
389 years
at light speed from Earth
1.87×
as hot as the Sun
73.18×
the Sun's light output
0.19
absolute magnitude
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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.