K-type star · orange

Alterf

Alterf is an orange in the constellation Leo 329 ly from Earth. Its surface is about 3,733 K, about 0.6 times the Sun's surface temperature, and it shines at 166× the Sun's brightness. At magnitude 4.3 it is bright enough to see with the naked eye; the light you see left it 329 years ago.

329 lybrightness mag 4.32K5IIIvar

Also catalogued as Lambda Leo · HR 3773 · HD 82308 · HIP 46750

3,733 K
temperature
4.32
apparent magnitude
166× ☉
luminosity vs Sun
K5IIIvar
spectral type
Distance & comparison with our Sun
329 years
at light speed from Earth
0.65×
as hot as the Sun
166×
the Sun's light output
-0.70
absolute magnitude
Explore from here · roam the neighborhood
AlterfK-type
Sky regionLeothis direction
Star79 Cnc50 ly
StarNahn54 ly
StarHR 394255 ly
StarAlgiebastar
StarZosmastar
Nearest stars
Bright stars in Leo
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 4.3To 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.