B-type star · blue-white star
Nu Cas
Nu Cas is a blue-white star in the constellation Cassiopeia 412 ly from Earth. Its surface is about 11,424 K, about 2.0 times the Sun's surface temperature, and it shines at 152× the Sun's brightness. At magnitude 4.9 it is bright enough to see with the naked eye; the light you see left it 412 years ago.
Also catalogued as HR 223 · HD 4636 · HIP 3801
11,424 K
temperature
4.90
apparent magnitude
152× ☉
luminosity vs Sun
B9III
spectral type
Distance & comparison with our Sun
412 years
at light speed from Earth
1.98×
as hot as the Sun
152×
the Sun's light output
-0.61
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.