B-type star · blue-white star

HR 1820

HR 1820 is a blue-white star in the constellation Orion 1,289 ly from Earth. Its surface is about 12,967 K, about 2.2 times the Sun's surface temperature, and it shines at 371× the Sun's brightness. At magnitude 6.4 it is within reach of 50 mm binoculars; the light you see left it 1,289 years ago.

1,289 lybrightness mag 6.41B2V

Also catalogued as HD 35912 · HIP 25582

12,967 K
temperature
6.41
apparent magnitude
371× ☉
luminosity vs Sun
B2V
spectral type
Distance & comparison with our Sun
1,289 years
at light speed from Earth
2.25×
as hot as the Sun
371×
the Sun's light output
-1.57
absolute magnitude
Explore from here · roam the neighborhood
HR 1820B-type
Sky regionOrionthis direction
StarHR 180353 ly
StarOmega Ori130 ly
StarHR 1648140 ly
StarHatysastar
StarTabitstar
Nearest stars
Bright stars in Orion
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.4To see it 50 mm binocularsLook toward Orion

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.