F-type star · yellow-white star

40 Leo

40 Leo is a yellow-white star in the constellation Leo 69.7 ly from Earth. Its surface is about 6,615 K, about 1.1 times the Sun's surface temperature, and it shines at 4.87× the Sun's brightness. At magnitude 4.8 it is bright enough to see with the naked eye; the light you see left it 70 years ago.

69.7 lybrightness mag 4.78F6IV

Also catalogued as HR 4054 · HD 89449 · HIP 50564 · Gliese Gl 388.1

6,615 K

temperature

4.78

apparent magnitude

4.87× ☉

luminosity vs Sun

F6IV

spectral type

Distance & comparison with our Sun

70 years

at light speed from Earth

1.15×

as hot as the Sun

4.87×

the Sun's light output

3.13

absolute magnitude

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40 LeoF-type

Sky regionLeothis direction

StarRas Elased Australisstar

Nearest stars

Bright stars in Leo

Can you see it tonight?

VISIBLE TO THE NAKED EYE

Brightness mag 4.8To see it no equipment neededLook toward Leo

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.