K-type star · orange
HR 5637
HR 5637 is an orange in the constellation Lupus 2,160 ly from Earth. Its surface is about 4,476 K, about 0.8 times the Sun's surface temperature, and it shines at 2,523× the Sun's brightness. At magnitude 5.5 it is bright enough to see with the naked eye; the light you see left it 2,160 years ago.
Also catalogued as HD 134270 · HIP 74305
4,476 K
temperature
5.45
apparent magnitude
2,523× ☉
luminosity vs Sun
G2Ib/II
spectral type
Distance & comparison with our Sun
2,160 years
at light speed from Earth
0.78×
as hot as the Sun
2,523×
the Sun's light output
-3.65
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.