B-type star · blue-white star

Sigma Cen

Sigma Cen is a blue-white star in the constellation Centaurus 412 ly from Earth. Its surface is about 13,395 K, about 2.3 times the Sun's surface temperature, and it shines at 379× the Sun's brightness. At magnitude 3.9 it is bright enough to see with the naked eye; the light you see left it 412 years ago.

412 lybrightness mag 3.91B3V

Also catalogued as HR 4743 · HD 108483 · HIP 60823

13,395 K

temperature

3.91

apparent magnitude

379× ☉

luminosity vs Sun

B3V

spectral type

Distance & comparison with our Sun

412 years

at light speed from Earth

2.32×

as hot as the Sun

379×

the Sun's light output

-1.60

absolute magnitude

Explore from here · roam the neighborhood

Sigma CenB-type

Sky regionCentaurusthis direction

Nearest stars

Bright stars in Centaurus

Can you see it tonight?

VISIBLE TO THE NAKED EYE

Brightness mag 3.9To see it no equipment neededLook toward Centaurus

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.