K-type star · orange dwarf
Guniibuu B
Guniibuu B is an orange dwarf in the constellation Ophiuchus 19.5 ly from Earth. Its surface is about 5,134 K, about 0.9 times the Sun's surface temperature, and it shines at 0.29× the Sun's brightness. At magnitude 5.1 it is bright enough to see with the naked eye; the light you see left it 20 years ago.
Also catalogued as 36 Oph · HR 6402 · HD 155886 · Gliese Gl 663B
5,134 K
temperature
5.07
apparent magnitude
0.29× ☉
luminosity vs Sun
K1 Ve
spectral type
Distance & comparison with our Sun
20 years
at light speed from Earth
0.89×
as hot as the Sun
0.29×
the Sun's light output
6.18
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.