B-type star · blue-white star

HR 2224

HR 2224 is a blue-white star in the constellation Monoceros 640 ly from Earth. Its surface is about 12,589 K, about 2.2 times the Sun's surface temperature, and it shines at 156× the Sun's brightness. At magnitude 5.8 it is bright enough to see with the naked eye; the light you see left it 640 years ago.

640 lybrightness mag 5.83B5V

Also catalogued as HD 43157 · HIP 29629

12,589 K
temperature
5.83
apparent magnitude
156× ☉
luminosity vs Sun
B5V
spectral type
Distance & comparison with our Sun
640 years
at light speed from Earth
2.18×
as hot as the Sun
156×
the Sun's light output
-0.63
absolute magnitude
Explore from here · roam the neighborhood
HR 2224B-type
Sky regionMonocerosthis direction
StarBeta Mon62 ly
StarHR 220266 ly
StarHR 223779 ly
StarAlpha Monstar
StarGamma Monstar
Nearest stars
Bright stars in Monoceros
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.8To see it no equipment neededLook toward Monoceros

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.