K-type star · orange
Upsilon Gem
Upsilon Gem is an orange in the constellation Gemini 271 ly from Earth. Its surface is about 3,734 K, about 0.6 times the Sun's surface temperature, and it shines at 143× the Sun's brightness. At magnitude 4.1 it is bright enough to see with the naked eye; the light you see left it 271 years ago.
Also catalogued as HR 2905 · HD 60522 · HIP 36962
3,734 K
temperature
4.06
apparent magnitude
143× ☉
luminosity vs Sun
K5III
spectral type
Distance & comparison with our Sun
271 years
at light speed from Earth
0.65×
as hot as the Sun
143×
the Sun's light output
-0.54
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.