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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:14 
Transit: 13:06 
Sunset: 20:58
wb_twilight   (Nautical Twilight)   What's Visible Now?
All Constellations » Cygnus » 

Sadr - γ Cygni (gamma Cygni)

Above the horizon.  Circumpolar today
Alt: 60.02°   Az: 264.39°   Direction: West

Sadr, also designated as γ Cygni (gamma Cygni), is a variable and multiple supergiant star of spectral class F8 in the constellation of Cygnus.

Sadr visual magnitude is 2.2, making it the 63th brightest star in the sky. Because of its brightness, Sadr is clearly visible to the naked eye when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.

Image of Sadr - γ Cygni (gamma Cygni) star
DSS2 image of Sadr. The red arrow shows the motion of Sadr during the next 100000 years (6.67 arcmin in Right Ascension and 0.00 arcmin in declination);

Celestial Coordinates

Apparent

20h 23m 06s
+40° 20’ 11”
02h 42m 53s
23h 06m 00s

J2000

20h 22m 13s
+40° 15’ 24”

Galactic Coordinates

78.15°
1.87°

Finder Chart

Finder chart Sadr - γ Cygni (gamma Cygni) star
Simplified finder chart for Sadr - γ Cygni (gamma Cygni).

Magnitude, Color, Spectral Class

2.2
Supergiant

-6.15
F8I
5671K

The red dot in the diagram below shows where Sadr is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of Sadr. Attribution: Richard Powell / CC BY-SA

Star System Properties

Sadr is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the Sadr double sysyem:

2.2
10.7
8.5
141.2 arcsec

Distance, Radial Speed, Proper Motion

Sadr is distant 1,523.36 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

467.29
1,523.36
-8 km/s
0.004 arcsec/y

Alternative Designations

Sadr
γ Cygni
(gamma Cygni)
SAO49528
SAO49528

Visibility from Your Location

Sadr - γ Cygni (gamma Cygni) is circumpolar and transits at 00:14 UTC (altitude: 78.9°)