39 Cygni

Above the horizon. Rise: 12:08 | Tran: 21:35 | Set: 7:06

Alt: 11.18° Az: 51.28° Direction: North-East

39 Cygni is a giant star of spectral class K2 in the constellation of Cygnus.

39 Cygni visual magnitude is 4.43. Because of its moderate brightness, 39 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.

DSS2 image of 39 Cygni. The red arrow shows the motion of 39 Cygni during the next 10000 years (8.17 arcmin in Right Ascension and -0.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 24m 50s

Declination +32° 16’ 15”

Hour Angle 16h 19m 24s

Sideral Time 12h 44m 15s

J2000

Right Ascension 20h 23m 51s

Declination +32° 11’ 23”

Galactic Coordinates

Galactic Longitude 71.72°

Galactic Latitude -3.02°

Finder Chart

Simplified finder chart for 39 Cygni.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.43

Class Giant

Absolute magnitude -0.04

Spectral Type K2III

Color Index (B-V) 1.33

Temperature 4069K

The red dot in the diagram below shows where 39 Cygni is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 39 Cygni. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

39 Cygni is distant 255.29 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

Distance (parsec) 78.31

Distance (light year) 255.29

Radial Speed -15 km/s

Proper Motion RA 0.049 arcsec/y

Proper Motion Dec -0.005"/y

Alternative Designations

Flamsteed designation 39 Cygni

Henry Draper Catalogue HD194317

SAO Catalogue SAO69950

Hipparcos Catalogue HIP100587

Durchmusterung Catalogue BD+31 4062

FK5 Catalogue 3633

Visibility from Your Location

Today's 39 Cygni rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 57.7° RISE 12:08

Max altitude: 70.8° TRANSIT 21:35

Azimuth: 302.3° SET 7:06

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Cygnus