A-type star · white star

HR 5818

HR 5818 is a white star in the constellation Draco 255 ly from Earth. Its surface is about 9,531 K, about 1.7 times the Sun's surface temperature, and it shines at 26.28× the Sun's brightness. At magnitude 5.8 it is bright enough to see with the naked eye; the light you see left it 255 years ago.

255 lybrightness mag 5.77A2V

Also catalogued as HD 139493 · HIP 76376

9,531 K
temperature
5.77
apparent magnitude
26.28× ☉
luminosity vs Sun
A2V
spectral type
Distance & comparison with our Sun
255 years
at light speed from Earth
1.65×
as hot as the Sun
26.28×
the Sun's light output
1.30
absolute magnitude
Explore from here · roam the neighborhood
HR 5818A-type
Sky regionDracothis direction
StarHR 588717 ly
StarHR 563519 ly
StarHR 571538 ly
StarEltaninstar
StarAthebynestar
Nearest stars
Bright stars in Draco
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.8To see it no equipment neededLook toward Draco

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.