σ Cygni (sigma Cygni)
Above the horizon.
Circumpolar today
Alt: 1.17°
Az: 5.10°
Direction: North
σ Cygni is a variable supergiant star of spectral class B9 in the constellation of Cygnus.
σ Cygni visual magnitude is 4.23. Because of its moderate brightness, σ Cygni is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.
DSS2 image of σ Cygni. The red arrow shows the motion of σ Cygni during the next
100000 years (1.67 arcmin in Right Ascension and -5.00 arcmin in declination);
Celestial Coordinates
Apparent
J2000
Galactic Coordinates
Finder Chart
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Finder chart for σ Cygni (sigma Cygni).
Magnitude, Color, Spectral Class
The red dot in the diagram below shows where σ Cygni is situated in the Hertzsprung–Russell diagram.
H-R diagram showing the position of σ Cygni.
Attribution: Richard Powell / CC BY-SA
Distance, Radial Speed, Proper Motion
σ Cygni is distant 4,527.78 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.
Alternative Designations
Visibility from Your Location
σ Cygni (sigma Cygni) is circumpolar and transits at 05:21 UTC (altitude: 78.0°)