4 Cygni
4 Cygni is a variable star of spectral class B9 in the constellation of Cygnus.
4 Cygni visual magnitude is 5.15. Because of its faintness, 4 Cygni is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Celestial Coordinates
Apparent
J2000
Galactic Coordinates
Finder Chart
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Finder chart for 4 Cygni.
Magnitude, Color, Spectral Class
4 Cygni is also a Si chemically peculiar star.

The red dot in the diagram below shows where 4 Cygni is situated in the Hertzsprung–Russell diagram.

Distance, Radial Speed, Proper Motion
4 Cygni is distant 653.31 light years from the Sun and it is moving towards the Sun at the speed of 22 kilometers per second.
Alternative Designations
Visibility from Your Location
Today's 4 Cygni rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):