B-type star · blue-white star
4 Cyg
4 Cyg is a blue-white star in the constellation Cygnus 707 ly from Earth. Its surface is about 11,920 K, about 2.1 times the Sun's surface temperature, and it shines at 350× the Sun's brightness. At magnitude 5.2 it is bright enough to see with the naked eye; the light you see left it 707 years ago.
Also catalogued as HR 7395 · HD 183056 · HIP 95556
11,920 K
temperature
5.17
apparent magnitude
350× ☉
luminosity vs Sun
B9sp...
spectral type
Distance & comparison with our Sun
707 years
at light speed from Earth
2.07×
as hot as the Sun
350×
the Sun's light output
-1.51
absolute magnitude
Explore from here · roam the neighborhood
Nearest stars
Can you see it tonight?
VISIBLE TO THE NAKED EYE
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.