A-type star · white star

17 CMa

17 CMa is a white star in the constellation Canis Major 504 ly from Earth. Its surface is about 9,563 K, about 1.7 times the Sun's surface temperature, and it shines at 99.54× the Sun's brightness. At magnitude 5.8 it is bright enough to see with the naked eye; the light you see left it 504 years ago.

504 lybrightness mag 5.80A2V

Also catalogued as HR 2588 · HD 51055 · HIP 33248

9,563 K

temperature

5.80

apparent magnitude

99.54× ☉

luminosity vs Sun

A2V

spectral type

Distance & comparison with our Sun

504 years

at light speed from Earth

1.66×

as hot as the Sun

99.54×

the Sun's light output

-0.14

absolute magnitude

Explore from here · roam the neighborhood

17 CMaA-type

Sky regionCanis Majorthis direction

Nearest stars

Bright stars in Canis Major

Can you see it tonight?

VISIBLE TO THE NAKED EYE

Brightness mag 5.8To 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.