We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:52  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
wb_twilight Civil TwilightWhat's Visible Now?
All Constellations » Cygnus » 

79 Cygni

Altitude: 10.4°   Azimuth: 38.6°   Direction: North-East

79 Cygni is a multiple hypergiant star in the constellation of Cygnus.

79 Cygni visual magnitude is 5.65. Because of its reltive faintness, 79 Cygni should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 79 Cygni:


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

Altitude: 10.4°
Azimuth: 38.6°
Direction: North-East

Celestial coordinates and finder chart of 79 Cygni

79 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 79 Cygni are provided in the following table:

21h 43m 25s
+38° 17’ 02”

The simplified sky map below shows the position of 79 Cygni in the sky:

Finder chart 79 Cygni star
Simplified finder chart for 79 Cygni.

Visibility of 79 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 79 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: 51.7°
Max altitude: 76.8°
Azimuth: 308.3°

Digitized Sky Survey image of 79 Cygni

The image below is a photograph of 79 Cygni from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of 79 Cygni is 0.036 arcsec per year in Right Ascension and 0.004 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 79 Cygni star
DSS2 image of 79 Cygni. The red arrow shows the motion of 79 Cygni during the next 10000 years (6.00 arcmin in Right Ascension and 0.67 arcmin in declination);

Distance of 79 Cygni from the Sun and relative movement

79 Cygni is distant 272.35 light years from the Sun and it is moving towards the Sun at the speed of 23 kilometers per second.

83.54 pc
272.35 ly
-23 km/s
0.036 arcsec/year
0.004 arcsec/year

Spectral properties of 79 Cygni

79 Cygni belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where 79 Cygni is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 79 Cygni. Attribution: Richard Powell / CC BY-SA

79 Cygni star system properties

79 Cygni is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 79 Cygni double sysyem:

151.2 arcsec

Alternative designations of 79 Cygni