B-type star · blue-white star

HR 2284

HR 2284 is a blue-white star in the constellation Canis Major 1,102 ly from Earth. Its surface is about 10,100 K, about 1.7 times the Sun's surface temperature, and it shines at 639× the Sun's brightness. At magnitude 5.5 it is bright enough to see with the naked eye; the light you see left it 1,102 years ago.

1,102 lybrightness mag 5.48B1Vpe SB

Also catalogued as HD 44458 · HIP 30214

10,100 K
temperature
5.48
apparent magnitude
639× ☉
luminosity vs Sun
B1Vpe SB
spectral type
Distance & comparison with our Sun
1,102 years
at light speed from Earth
1.75×
as hot as the Sun
639×
the Sun's light output
-2.16
absolute magnitude
Explore from here · roam the neighborhood
HR 2284B-type
Sky regionCanis Majorthis direction
StarHR 236779 ly
Star10 Mon140 ly
StarHR 2450150 ly
StarAdharastar
StarWezenstar
Nearest stars
Bright stars in Canis Major
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.5To 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.