B-type star · blue-white star
Pi¹ Boo
Pi¹ Boo is a blue-white star in the constellation Boötes 306 ly from Earth. Its surface is about 10,150 K, about 1.8 times the Sun's surface temperature, and it shines at 122× the Sun's brightness. At magnitude 4.5 it is bright enough to see with the naked eye; the light you see left it 306 years ago.
Also catalogued as HR 5475 · HD 129174 · HIP 71762
10,150 K
temperature
4.49
apparent magnitude
122× ☉
luminosity vs Sun
B9p MnHg
spectral type
Distance & comparison with our Sun
306 years
at light speed from Earth
1.76×
as hot as the Sun
122×
the Sun's light output
-0.37
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.