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🌎  Greenwich, United Kingdom [change]

72 Cygni

72 Cygni is a hypergiant star in the constellation of Cygnus.

72 Cygni visual magnitude is 4.9. Because of its moderate brightness, 72 Cygni should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about 72 Cygni:

4.9
Hypergiant
72 Cygni is above the horizon from Greenwich, United Kingdom [change]. Altitude: 23°.

Celestial coordinates and finder chart of 72 Cygni

72 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 72 Cygni are provided in the following table:

21h 34m 46s
+38° 32’ 03”
86.01°
-9.85°
Cygnus

The simplified sky map below shows the position of 72 Cygni in the sky:

Finder chart 72 Cygni star
Simplified finder chart for 72 Cygni.

Visibility of 72 Cygni from your location

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

72 Cygni is circumpolar and transits at 13:42 UTC (altitude: 77.1°)

Digitized Sky Survey image of 72 Cygni

The image below is a photograph of 72 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 72 Cygni is 0.124 arcsec per year in Right Ascension and 0.099 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 72 Cygni star
DSS2 image of 72 Cygni. The red arrow shows the motion of 72 Cygni during the next 1000 years (2.07 arcmin in Right Ascension and 1.65 arcmin in declination);

Distance of 72 Cygni from the Sun and relative movement

72 Cygni is distant 255.49 light years from the Sun and it is moving towards the Sun at the speed of 66 kilometers per second.

78.37 pc
255.49 ly
-66 km/s
0.124 arcsec/year
0.099 arcsec/year

Spectral properties of 72 Cygni

72 Cygni belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.

0.43
K0III
4559K

The red dot in the diagram below shows where 72 Cygni is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 72 Cygni. Attribution: Richard Powell / CC BY-SA

Alternative designations of 72 Cygni

SAO71480
SAO71480