B-type star · blue-white star

Sigma Lup

Sigma Lup is a blue-white star in the constellation Lupus 575 ly from Earth. Its surface is about 13,055 K, about 2.3 times the Sun's surface temperature, and it shines at 454× the Sun's brightness. At magnitude 4.4 it is bright enough to see with the naked eye; the light you see left it 575 years ago.

575 lybrightness mag 4.44B2III

Also catalogued as HR 5425 · HD 127381 · HIP 71121

13,055 K
temperature
4.44
apparent magnitude
454× ☉
luminosity vs Sun
B2III
spectral type
Distance & comparison with our Sun
575 years
at light speed from Earth
2.26×
as hot as the Sun
454×
the Sun's light output
-1.79
absolute magnitude
Explore from here · roam the neighborhood
Sigma LupB-type
Sky regionLupusthis direction
StarHR 555952 ly
StarHR 526676 ly
StarHD 13543077 ly
StarUridimstar
StarBeta Lupstar
Nearest stars
Bright stars in Lupus
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 4.4To see it no equipment neededLook toward Lupus

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.