B-type star · blue-white star
HR 1781
HR 1781 is a blue-white star in the constellation Orion 877 ly from Earth. Its surface is about 13,781 K, about 2.4 times the Sun's surface temperature, and it shines at 333× the Sun's brightness. At magnitude 5.7 it is bright enough to see with the naked eye; the light you see left it 877 years ago.
Also catalogued as HD 35299 · HIP 25223
13,781 K
temperature
5.69
apparent magnitude
333× ☉
luminosity vs Sun
B1.5V
spectral type
Distance & comparison with our Sun
877 years
at light speed from Earth
2.39×
as hot as the Sun
333×
the Sun's light output
-1.46
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.