B-type star · blue-white star
HR 3440
HR 3440 is a blue-white star in the constellation Vela 445 ly from Earth. Its surface is about 12,141 K, about 2.1 times the Sun's surface temperature, and it shines at 107× the Sun's brightness. At magnitude 5.5 it is bright enough to see with the naked eye; the light you see left it 445 years ago.
Also catalogued as HD 74071 · HIP 42459
12,141 K
temperature
5.45
apparent magnitude
107× ☉
luminosity vs Sun
B5V
spectral type
Distance & comparison with our Sun
445 years
at light speed from Earth
2.10×
as hot as the Sun
107×
the Sun's light output
-0.22
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.