B-type star · blue-white star
HD 70309
HD 70309 is a blue-white star in the constellation Vela 940 ly from Earth. Its surface is about 12,122 K, about 2.1 times the Sun's surface temperature, and it shines at 190× the Sun's brightness. At magnitude 6.5 it is within reach of 50 mm binoculars; the light you see left it 940 years ago.
Also catalogued as HIP 40749
12,122 K
temperature
6.45
apparent magnitude
190× ☉
luminosity vs Sun
B3V
spectral type
Distance & comparison with our Sun
940 years
at light speed from Earth
2.10×
as hot as the Sun
190×
the Sun's light output
-0.85
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.