K-type star · orange

30 Gem

30 Gem is an orange in the constellation Gemini 289 ly from Earth. Its surface is about 4,375 K, about 0.8 times the Sun's surface temperature, and it shines at 109× the Sun's brightness. At magnitude 4.5 it is bright enough to see with the naked eye; the light you see left it 289 years ago.

289 lybrightness mag 4.49K1III

Also catalogued as HR 2478 · HD 48433 · HIP 32249

4,375 K
temperature
4.49
apparent magnitude
109× ☉
luminosity vs Sun
K1III
spectral type
Distance & comparison with our Sun
289 years
at light speed from Earth
0.76×
as hot as the Sun
109×
the Sun's light output
-0.25
absolute magnitude
Explore from here · roam the neighborhood
30 GemK-type
Sky regionGeminithis direction
StarHR 258430 ly
StarHR 244932 ly
StarHR 234232 ly
StarPolluxstar
StarAlhenastar
Nearest stars
Bright stars in Gemini
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 4.5To see it no equipment neededLook toward Gemini

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.