9 Cygni

Below the horizon. Rise: 19:05 | Tran: 4:08 | Set: 13:06

Alt: -6.21° Az: 338.83° Direction: North-North-West

9 Cygni is a double giant star of spectral class F8 in the constellation of Cygnus.

9 Cygni visual magnitude is 5.38. Because of its faintness, 9 Cygni is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of 9 Cygni. The red arrow shows the motion of 9 Cygni during the next 10000 years (2.50 arcmin in Right Ascension and 4.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 19h 35m 51s

Declination +29° 31’ 12”

Hour Angle 10h 22m 30s

Sidereal Time 05h 58m 22s

J2000

Right Ascension 19h 34m 50s

Declination +29° 27’ 47”

Galactic Coordinates

Galactic Longitude 63.87°

Galactic Latitude 4.5°

Finder Chart

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Finder chart for 9 Cygni.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.38

Class Giant

Absolute magnitude -0.71

Spectral Type F8III

Color Index (B-V) 0.55

Temperature 6170K

The red dot in the diagram below shows where 9 Cygni is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 9 Cygni. Attribution: Richard Powell / CC BY-SA

Star System Properties

9 Cygni is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 9 Cygni double sysyem:

Main star magnitude 5.38

Secondary star magnitude 5.88

Magnitude difference 0.5

Separation 0.1 arcsec

Distance, Radial Speed, Proper Motion

9 Cygni is distant 537.95 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

Distance (parsec) 165.02

Distance (light year) 537.95

Radial Speed -11 km/s

Proper Motion RA 0.015 arcsec/y

Proper Motion Dec 0.024"/y

Alternative Designations

Flamsteed designation 9 Cygni

Henry Draper Catalogue HD184759

SAO Catalogue SAO87385

Hipparcos Catalogue HIP96302

Durchmusterung Catalogue BD+29 3651

Visibility from Your Location

Today's 9 Cygni rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 60.5° RISE 19:05

Max altitude: 68.0° TRANSIT 4:08

Azimuth: 299.5° SET 13:06

Set Location

Other stars in Cygnus