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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:48  
clear_day Transit: 12:11  
SunsetSet: 17:34
sleep NighttimeWhat's Visible Now?
All Constellations » Cygnus » 

15 Cygni

Altitude: 3.4°   Azimuth: 25.8°   Direction: North-North-East

15 Cygni is a giant star in the constellation of Cygnus.

15 Cygni visual magnitude is 4.89. Because of its moderate brightness, 15 Cygni should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.

The proper motion of 15 Cygni is 0.075 arcsec per year in Right Ascension and 0.035 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 15 Cygni star
DSS2 image of 15 Cygni. The red arrow shows the motion of 15 Cygni during the next 10000 years (12.50 arcmin in Right Ascension and 5.83 arcmin in declination);

Key facts about 15 Cygni


15 Cygni is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 3.4°
Azimuth: 25.8°
Direction: North-North-East

Celestial coordinates and finder chart of 15 Cygni

15 Cygni is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 15 Cygni are provided in the following table:

19h 44m 16s
+37° 21’ 15”

The simplified sky map below shows the position of 15 Cygni in the sky:

Finder chart 15 Cygni star
Simplified finder chart for 15 Cygni.

Visibility of 15 Cygni from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's 15 Cygni rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 52.6°
Max altitude: 75.9°
Azimuth: 307.4°

Distance of 15 Cygni from the Sun and relative movement

15 Cygni is distant 278.63 light years from the Sun and it is moving towards the Sun at the speed of 24 kilometers per second.

85.47 pc
278.63 ly
-24 km/s
0.075 arcsec/year
0.035 arcsec/year

Spectral properties of 15 Cygni

15 Cygni belongs to spectral class G7 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 15 Cygni is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 15 Cygni. Attribution: Richard Powell / CC BY-SA

Alternative designations of 15 Cygni