B-type star · blue-white star
40 Gem
40 Gem is a blue-white star in the constellation Gemini 1,195 ly from Earth. Its surface is about 11,761 K, about 2.0 times the Sun's surface temperature, and it shines at 322× the Sun's brightness. At magnitude 6.4 it is within reach of 50 mm binoculars; the light you see left it 1,195 years ago.
Also catalogued as HR 2605 · HD 51688 · HIP 33650
11,761 K
temperature
6.40
apparent magnitude
322× ☉
luminosity vs Sun
B8III
spectral type
Distance & comparison with our Sun
1,195 years
at light speed from Earth
2.04×
as hot as the Sun
322×
the Sun's light output
-1.42
absolute magnitude
Explore from here · roam the neighborhood
Nearest stars
Can you see it tonight?
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.