A-type star · white star

HR 6399

HR 6399 is a white star in the constellation Hercules 309 ly from Earth. Its surface is about 8,281 K, about 1.4 times the Sun's surface temperature, and it shines at 27.95× the Sun's brightness. At magnitude 6.1 it is within reach of 50 mm binoculars; the light you see left it 309 years ago.

309 lybrightness mag 6.12A5III

Also catalogued as HD 155860 · HIP 84108

8,281 K
temperature
6.12
apparent magnitude
27.95× ☉
luminosity vs Sun
A5III
spectral type
Distance & comparison with our Sun
309 years
at light speed from Earth
1.43×
as hot as the Sun
27.95×
the Sun's light output
1.23
absolute magnitude
Explore from here · roam the neighborhood
HR 6399A-type
Sky regionHerculesthis direction
StarHR 660728 ly
StarHR 633039 ly
StarHR 622644 ly
StarKornephorosstar
StarRasalgethistar
Nearest stars
Bright stars in Hercules
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.1To see it 50 mm binocularsLook toward Hercules

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.