B-type star · blue-white star

Omicron² CMa

Omicron² CMa is a blue-white star in the constellation Canis Major 2,764 ly from Earth. Its surface is about 11,200 K, about 1.9 times the Sun's surface temperature, and it shines at 38,761× the Sun's brightness. At magnitude 3.0 it is bright enough to see with the naked eye; the light you see left it 2,764 years ago.

2,764 lybrightness mag 3.02B3Ia

Also catalogued as HR 2653 · HD 53138 · HIP 33977

11,200 K
temperature
3.02
apparent magnitude
38,761× ☉
luminosity vs Sun
B3Ia
spectral type
Distance & comparison with our Sun
2,764 years
at light speed from Earth
1.94×
as hot as the Sun
38,761×
the Sun's light output
-6.62
absolute magnitude
Explore from here · roam the neighborhood
Omicron² CMaB-type
Sky regionCanis Majorthis direction
StarHR 2614170 ly
StarTau CMa300 ly
StarHR 2800360 ly
StarAdharastar
StarWezenstar
Nearest stars
Bright stars in Canis Major
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 3.0To see it no equipment neededLook toward Canis Major

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.