B-type star · blue-white star

HR 1640

HR 1640 is a blue-white star in the constellation Lepus 1,853 ly from Earth. Its surface is about 13,279 K, about 2.3 times the Sun's surface temperature, and it shines at 760× the Sun's brightness. At magnitude 6.4 it is within reach of 50 mm binoculars; the light you see left it 1,853 years ago.

1,853 lybrightness mag 6.42B2IV

Also catalogued as HD 32612 · HIP 23551

13,279 K
temperature
6.42
apparent magnitude
760× ☉
luminosity vs Sun
B2IV
spectral type
Distance & comparison with our Sun
1,853 years
at light speed from Earth
2.30×
as hot as the Sun
760×
the Sun's light output
-2.35
absolute magnitude
Explore from here · roam the neighborhood
HR 1640B-type
Sky regionLepusthis direction
Star8 Lep250 ly
StarHR 1962300 ly
Star55 Eri380 ly
StarArnebstar
StarNihalstar
Nearest stars
Bright stars in Lepus
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.4To see it 50 mm binocularsLook toward Lepus

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.