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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 6:44 
Transit: 12:53 
Sunset: 19:00
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All Constellations » Cygnus » 

31 Cygni

Above the horizon.  Circumpolar today
Alt: 8.92°   Az: 351.13°   Direction: North

31 Cygni is a variable and multiple bright giant star of spectral class K2 in the constellation of Cygnus.

31 Cygni visual magnitude is 3.79. Because of its moderate brightness, 31 Cygni is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Image of 31 Cygni star
DSS2 image of 31 Cygni. The red arrow shows the motion of 31 Cygni during the next 100000 years (6.67 arcmin in Right Ascension and 5.00 arcmin in declination);

Celestial Coordinates

Apparent

20h 14m 24s
+46° 49’ 02”
11h 08m 32s
07h 22m 57s

J2000

20h 13m 37s
+46° 44’ 29”

Galactic Coordinates

82.68°
6.78°

Finder Chart

Finder chart 31 Cygni star
Simplified finder chart for 31 Cygni.

Magnitude, Color, Spectral Class

3.79
Bright giant

-4.30
K2II
4158K

The red dot in the diagram below shows where 31 Cygni is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 31 Cygni. Attribution: Richard Powell / CC BY-SA

Star System Properties

31 Cygni is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 31 Cygni double sysyem:

3.79
4.79
1
337.5 arcsec

Distance, Radial Speed, Proper Motion

31 Cygni is distant 1,352.70 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

414.94
1,352.70
-8 km/s
0.004 arcsec/y
0.003"/y

Alternative Designations

SAO49337
SAO49337

Visibility from Your Location

31 Cygni is circumpolar and transits at 20:13 UTC (altitude: 85.3°)