Star
Sadr
Yellow-white star · F8Ib
γ Cygni · Cygnus
Shown in its true colour — like most stars, it is too far away to photograph as more than a point of light.
Gamma Cygni is a star in the northern constellation of Cygnus, forming the intersection of an asterism of five stars called the Northern Cross. It is officially named Sadr ; Gamma Cygni is its Bayer designation. Based upon parallax measurements obtained during the Hipparcos mission, it is approximately 1,800 light-years (560 parsecs) from the Sun.
Description from Wikipedia (CC BY-SA 4.0).
In your sky
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Key facts
Distance
~1,832 light-years
Apparent mag.
+2.23
Spectral type
F8Ib
Luminosity
35,253 × Sun
Absolute mag.
−6.52
Catalogue
HIP 100453
Spectral type
F8Ib
True colour from its B–V index (0.67): a surface around 5700 K.
Did you know
- Sadr is also known as γ Cygni.
- Its spectral type F8Ib marks it as a yellow-white star.
- It lies in the constellation Cygnus.
