B-type star · blue-white star

11 CMa

11 CMa is a blue-white star in the constellation Canis Major 796 ly from Earth. Its surface is about 10,435 K, about 1.8 times the Sun's surface temperature, and it shines at 400× the Sun's brightness. At magnitude 5.3 it is bright enough to see with the naked eye; the light you see left it 795 years ago.

796 lybrightness mag 5.28B8/B9III

Also catalogued as HR 2504 · HD 49229 · HIP 32492

10,435 K
temperature
5.28
apparent magnitude
400× ☉
luminosity vs Sun
B8/B9III
spectral type
Distance & comparison with our Sun
795 years
at light speed from Earth
1.81×
as hot as the Sun
400×
the Sun's light output
-1.66
absolute magnitude
Explore from here · roam the neighborhood
11 CMaB-type
Sky regionCanis Majorthis direction
Star12 CMa91 ly
StarHD 4439499 ly
StarHR 2249110 ly
StarAdharastar
StarWezenstar
Nearest stars
Bright stars in Canis Major
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.3To 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.