B-type star · blue-white star
HD 165338
HD 165338 is a blue-white star in the constellation Octans 695 ly from Earth. Its surface is about 10,584 K, about 1.8 times the Sun's surface temperature, and it shines at 100× the Sun's brightness. At magnitude 6.5 it is within reach of 50 mm binoculars; the light you see left it 695 years ago.
Also catalogued as HIP 90509
10,584 K
temperature
6.49
apparent magnitude
100× ☉
luminosity vs Sun
B8/B9V
spectral type
Distance & comparison with our Sun
695 years
at light speed from Earth
1.83×
as hot as the Sun
100×
the Sun's light output
-0.15
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.