B-type star · blue-white star

HR 1243

HR 1243 is a blue-white star in the constellation Taurus 571 ly from Earth. Its surface is about 10,063 K, about 1.7 times the Sun's surface temperature, and it shines at 144× the Sun's brightness. At magnitude 5.7 it is bright enough to see with the naked eye; the light you see left it 571 years ago.

571 lybrightness mag 5.67B5V

Also catalogued as HD 25330 · HIP 18805

10,063 K
temperature
5.67
apparent magnitude
144× ☉
luminosity vs Sun
B5V
spectral type
Distance & comparison with our Sun
571 years
at light speed from Earth
1.74×
as hot as the Sun
144×
the Sun's light output
-0.55
absolute magnitude
Explore from here · roam the neighborhood
HR 1243B-type
Sky regionTaurusthis direction
Star29 Tau66 ly
StarHR 140267 ly
StarHD 2786079 ly
StarElnathstar
StarAlcyonestar
Nearest stars
Bright stars in Taurus
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.7To see it no equipment neededLook toward Taurus

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.