B-type star · blue-white star
12 Lac
12 Lac is a blue-white star in the constellation Lacerta 1,342 ly from Earth. Its surface is about 12,235 K, about 2.1 times the Sun's surface temperature, and it shines at 1,172× the Sun's brightness. At magnitude 5.3 it is bright enough to see with the naked eye; the light you see left it 1,342 years ago.
Also catalogued as HR 8640 · HD 214993 · HIP 112031
12,235 K
temperature
5.25
apparent magnitude
1,172× ☉
luminosity vs Sun
B2IIIv SB
spectral type
Distance & comparison with our Sun
1,342 years
at light speed from Earth
2.12×
as hot as the Sun
1,172×
the Sun's light output
-2.82
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.