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public LocationGreenwich, UK
Sunrise: 5:08 
Transit: 13:06 
Sunset: 21:03
wb_twilight   (Astronomical Twilight)   What's Visible Now?
All Constellations » Cygnus » 

25 Cygni

Above the horizon.  Rise: 14:19 | Tran: 1:07 | Set: 11:51
Alt: 71.08°   Az: 227.35°   Direction: South-West

25 Cygni is a variable sub-giant star of spectral class B3 in the constellation of Cygnus.

25 Cygni visual magnitude is 5.19. Because of its faintness, 25 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.

Image of 25 Cygni star
DSS2 image of 25 Cygni. The red arrow shows the motion of 25 Cygni during the next 100000 years (10.00 arcmin in Right Ascension and 1.67 arcmin in declination);

Celestial Coordinates


20h 00m 49s
+37° 06’ 40”
01h 09m 35s
21h 10m 24s


19h 59m 55s
+37° 02’ 34”

Galactic Coordinates


Finder Chart

Finder chart 25 Cygni star
Simplified finder chart for 25 Cygni.

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where 25 Cygni is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 25 Cygni. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

25 Cygni is distant 1,574.88 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.

-4 km/s
0.006 arcsec/y

Alternative Designations


Visibility from Your Location

Today's 25 Cygni rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 52.9°
Max altitude: 75.6°
Azimuth: 307.1°