K-type star · orange
40 Com
40 Com is an orange in the constellation Coma Berenices 736 ly from Earth. Its surface is about 3,853 K, about 0.7 times the Sun's surface temperature, and it shines at 272× the Sun's brightness. At magnitude 5.5 it is bright enough to see with the naked eye; the light you see left it 736 years ago.
Also catalogued as HR 4949 · HD 113866 · HIP 63950 · Gliese Gl 499.1
3,853 K
temperature
5.53
apparent magnitude
272× ☉
luminosity vs Sun
M5III
spectral type
Distance & comparison with our Sun
736 years
at light speed from Earth
0.67×
as hot as the Sun
272×
the Sun's light output
-1.24
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.