K-type star · orange
Yunü
Yunü is an orange in the constellation Leo 295 ly from Earth. Its surface is about 3,873 K, about 0.7 times the Sun's surface temperature, and it shines at 125× the Sun's brightness. At magnitude 4.4 it is bright enough to see with the naked eye; the light you see left it 295 years ago.
Also catalogued as 31 Leo · HR 3980 · HD 87837 · HIP 49637
3,873 K
temperature
4.39
apparent magnitude
125× ☉
luminosity vs Sun
K4III
spectral type
Distance & comparison with our Sun
295 years
at light speed from Earth
0.67×
as hot as the Sun
125×
the Sun's light output
-0.40
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.