K-type star · orange
HR 5809
HR 5809 is an orange in the constellation Libra 670 ly from Earth. Its surface is about 4,356 K, about 0.8 times the Sun's surface temperature, and it shines at 109× the Sun's brightness. At magnitude 6.3 it is within reach of 50 mm binoculars; the light you see left it 670 years ago.
Also catalogued as HD 139290 · HIP 76567
4,356 K
temperature
6.32
apparent magnitude
109× ☉
luminosity vs Sun
K1III
spectral type
Distance & comparison with our Sun
670 years
at light speed from Earth
0.75×
as hot as the Sun
109×
the Sun's light output
-0.24
absolute magnitude
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BINOCULARS NEEDED
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.