K-type star · orange
HR 747
HR 747 is an orange in the constellation Cassiopeia 924 ly from Earth. Its surface is about 3,704 K, about 0.6 times the Sun's surface temperature, and it shines at 335× the Sun's brightness. At magnitude 5.8 it is bright enough to see with the naked eye; the light you see left it 924 years ago.
Also catalogued as HD 16024 · HIP 12239
3,704 K
temperature
5.80
apparent magnitude
335× ☉
luminosity vs Sun
K5III
spectral type
Distance & comparison with our Sun
924 years
at light speed from Earth
0.64×
as hot as the Sun
335×
the Sun's light output
-1.46
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.