B-type star · blue-white star

HR 1803

HR 1803 is a blue-white star in the constellation Orion 1,240 ly from Earth. Its surface is about 13,077 K, about 2.3 times the Sun's surface temperature, and it shines at 425× the Sun's brightness. At magnitude 6.2 it is within reach of 50 mm binoculars; the light you see left it 1,240 years ago.

1,240 lybrightness mag 6.18B2.5V

Also catalogued as HD 35588 · HIP 25378

13,077 K
temperature
6.18
apparent magnitude
425× ☉
luminosity vs Sun
B2.5V
spectral type
Distance & comparison with our Sun
1,240 years
at light speed from Earth
2.27×
as hot as the Sun
425×
the Sun's light output
-1.72
absolute magnitude
Explore from here · roam the neighborhood
HR 1803B-type
Sky regionOrionthis direction
StarHR 182053 ly
StarHR 1648110 ly
StarPsi² Ori120 ly
StarHatysastar
StarTabitstar
Nearest stars
Bright stars in Orion
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.2To 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.