B-type star · blue-white star
Kappa¹ Lup
Kappa¹ Lup is a blue-white star in the constellation Lupus 180 ly from Earth. Its surface is about 10,502 K, about 1.8 times the Sun's surface temperature, and it shines at 74.40× the Sun's brightness. At magnitude 3.9 it is bright enough to see with the naked eye; the light you see left it 180 years ago.
Also catalogued as HR 5646 · HD 134481 · HIP 74376
10,502 K
temperature
3.88
apparent magnitude
74.40× ☉
luminosity vs Sun
B9V
spectral type
Distance & comparison with our Sun
180 years
at light speed from Earth
1.82×
as hot as the Sun
74.40×
the Sun's light output
0.17
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.