K-type star · orange dwarf
Kapteyn's Star
Kapteyn's Star is an orange dwarf in the constellation Pictor 12.8 ly from Earth. Its surface is about 3,730 K, about 0.6 times the Sun's surface temperature, and it shines at 0.004× the Sun's brightness. At magnitude 8.9 it is within reach of 50 mm binoculars; the light you see left it 13 years ago.
Also catalogued as HD 33793 · HIP 24186 · Gliese Gl 191
3,730 K
temperature
8.86
apparent magnitude
0.004× ☉
luminosity vs Sun
M0V
spectral type
Distance & comparison with our Sun
13 years
at light speed from Earth
0.65×
as hot as the Sun
0.004×
the Sun's light output
10.90
absolute magnitude
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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.