B-type star · blue-white star

HR 5781

HR 5781 is a blue-white star in the constellation Lupus 428 ly from Earth. Its surface is about 13,011 K, about 2.3 times the Sun's surface temperature, and it shines at 227× the Sun's brightness. At magnitude 4.5 it is bright enough to see with the naked eye; the light you see left it 428 years ago.

428 lybrightness mag 4.55B3IVp

Also catalogued as HD 138769 · HIP 76371

13,011 K
temperature
4.55
apparent magnitude
227× ☉
luminosity vs Sun
B3IVp
spectral type
Distance & comparison with our Sun
428 years
at light speed from Earth
2.25×
as hot as the Sun
227×
the Sun's light output
-1.04
absolute magnitude
Explore from here · roam the neighborhood
HR 5781B-type
Sky regionLupusthis direction
StarHD 13791929 ly
StarGamma Lup29 ly
StarHR 588234 ly
StarUridimstar
StarBeta Lupstar
Nearest stars
Bright stars in Lupus
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 4.5To 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.