B-type star · blue-white star

HR 1900

HR 1900 is a blue-white star in the constellation Orion 1,553 ly from Earth. Its surface is about 11,957 K, about 2.1 times the Sun's surface temperature, and it shines at 544× the Sun's brightness. At magnitude 6.4 it is within reach of 50 mm binoculars; the light you see left it 1,553 years ago.

1,553 lybrightness mag 6.40B3IV

Also catalogued as HD 37055 · HIP 26263

11,957 K
temperature
6.40
apparent magnitude
544× ☉
luminosity vs Sun
B3IV
spectral type
Distance & comparison with our Sun
1,553 years
at light speed from Earth
2.07×
as hot as the Sun
544×
the Sun's light output
-1.99
absolute magnitude
Explore from here · roam the neighborhood
HR 1900B-type
Sky regionOrionthis direction
StarHR 186150 ly
StarTheta² Ori59 ly
StarHR 192377 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.