K-type star · orange

HR 7791

HR 7791 is an orange in the constellation Cygnus 1,977 ly from Earth. Its surface is about 3,724 K, about 0.6 times the Sun's surface temperature, and it shines at 1,031× the Sun's brightness. At magnitude 6.2 it is within reach of 50 mm binoculars; the light you see left it 1,977 years ago.

1,977 lybrightness mag 6.23K5

Also catalogued as HD 193944 · HIP 100295

3,724 K
temperature
6.23
apparent magnitude
1,031× ☉
luminosity vs Sun
K5
spectral type
Distance & comparison with our Sun
1,977 years
at light speed from Earth
0.65×
as hot as the Sun
1,031×
the Sun's light output
-2.68
absolute magnitude
Explore from here · roam the neighborhood
HR 7791K-type
Sky regionCygnusthis direction
StarHR 7815140 ly
StarHR 8164330 ly
StarHR 7762370 ly
StarSadrstar
StarAljanahstar
Nearest stars
Bright stars in Cygnus
Can you see it tonight?
BINOCULARS NEEDED
Brightness mag 6.2To see it 50 mm binocularsLook toward Cygnus

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.