B-type star · blue-white star

HR 2170

HR 2170 is a blue-white star in the constellation Columba 1,019 ly from Earth. Its surface is about 12,235 K, about 2.1 times the Sun's surface temperature, and it shines at 400× the Sun's brightness. At magnitude 5.8 it is bright enough to see with the naked eye; the light you see left it 1,019 years ago.

1,019 lybrightness mag 5.82B4Vnn

Also catalogued as HD 42054 · HIP 28992

12,235 K
temperature
5.82
apparent magnitude
400× ☉
luminosity vs Sun
B4Vnn
spectral type
Distance & comparison with our Sun
1,019 years
at light speed from Earth
2.12×
as hot as the Sun
400×
the Sun's light output
-1.65
absolute magnitude
Explore from here · roam the neighborhood
HR 2170B-type
Sky regionColumbathis direction
StarHR 214941 ly
StarHD 4634794 ly
StarGamma Col150 ly
StarPhactstar
StarWaznstar
Nearest stars
Bright stars in Columba
Can you see it tonight?
VISIBLE TO THE NAKED EYE
Brightness mag 5.8To see it no equipment neededLook toward Columba

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.