B-type star · blue-white star

HR 2840

HR 2840 is a blue-white star in the constellation Canis Minor 1,337 ly from Earth. Its surface is about 12,029 K, about 2.1 times the Sun's surface temperature, and it shines at 407× the Sun's brightness. At magnitude 6.4 it is within reach of 50 mm binoculars; the light you see left it 1,337 years ago.

1,337 lybrightness mag 6.39B7II-III

Also catalogued as HD 58599 · HIP 36141

12,029 K
temperature
6.39
apparent magnitude
407× ☉
luminosity vs Sun
B7II-III
spectral type
Distance & comparison with our Sun
1,337 years
at light speed from Earth
2.08×
as hot as the Sun
407×
the Sun's light output
-1.67
absolute magnitude
Explore from here · roam the neighborhood
HR 2840B-type
Sky regionCanis Minorthis direction
StarHR 2967120 ly
StarHD 54986220 ly
StarHR 3104250 ly
StarGomeisastar
StarGamma CMistar
Nearest stars
Bright stars in Canis Minor
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.4To see it 50 mm binocularsLook toward Canis Minor

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.