B-type star · blue-white star
Kappa Dra
Kappa Dra is a blue-white star in the constellation Draco 490 ly from Earth. Its surface is about 11,849 K, about 2.1 times the Sun's surface temperature, and it shines at 568× the Sun's brightness. At magnitude 3.9 it is bright enough to see with the naked eye; the light you see left it 490 years ago.
Also catalogued as HR 4787 · HD 109387 · HIP 61281
11,849 K
temperature
3.85
apparent magnitude
568× ☉
luminosity vs Sun
B6IIIp
spectral type
Distance & comparison with our Sun
490 years
at light speed from Earth
2.05×
as hot as the Sun
568×
the Sun's light output
-2.04
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.