K-type star · orange

Sigma Per

Sigma Per is an orange in the constellation Perseus 360 ly from Earth. Its surface is about 4,005 K, about 0.7 times the Sun's surface temperature, and it shines at 191× the Sun's brightness. At magnitude 4.4 it is bright enough to see with the naked eye; the light you see left it 360 years ago.

360 lybrightness mag 4.36K3III

Also catalogued as HR 1052 · HD 21552 · HIP 16335

4,005 K
temperature
4.36
apparent magnitude
191× ☉
luminosity vs Sun
K3III
spectral type
Distance & comparison with our Sun
360 years
at light speed from Earth
0.69×
as hot as the Sun
191×
the Sun's light output
-0.85
absolute magnitude
Explore from here · roam the neighborhood
Sigma PerK-type
Sky regionPerseusthis direction
StarHR 95628 ly
StarHD 1887830 ly
StarHR 117632 ly
StarMirfakstar
StarZeta Perstar
Nearest stars
Bright stars in Perseus
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 4.4To see it no equipment neededLook toward Perseus

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.