9 Cephei

Above the horizon. Circumpolar today

Alt: 35.02° Az: 31.35° Direction: North-North-East

9 Cephei is a variable supergiant star of spectral class B2 in the constellation of Cepheus.

9 Cephei visual magnitude is 4.73. Because of its moderate brightness, 9 Cephei 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 9 Cephei. The red arrow shows the motion of 9 Cephei during the next 100000 years (-5.00 arcmin in Right Ascension and -3.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 21h 38m 36s

Declination +62° 11’ 49”

Hour Angle 16h 23m 59s

Sidereal Time 14h 02m 35s

J2000

Right Ascension 21h 37m 55s

Declination +62° 04’ 54”

Galactic Coordinates

Galactic Longitude 102.27°

Galactic Latitude 7.25°

Finder Chart

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Finder chart for 9 Cephei.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.73

Class Supergiant

Absolute magnitude -5.98

Spectral Type B2I

Color Index (B-V) 0.3

Temperature 7462K

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

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

Distance, Radial Speed, Proper Motion

9 Cephei is distant 4,527.78 light years from the Sun and it is moving towards the Sun at the speed of 13 kilometers per second.

Distance (parsec) 1,388.89

Distance (light year) 4,527.78

Radial Speed -13 km/s

Proper Motion RA -0.003 arcsec/y

Proper Motion Dec -0.002"/y

Alternative Designations

Flamsteed designation 9 Cephei

Henry Draper Catalogue HD206165

SAO Catalogue SAO19541

Hipparcos Catalogue HIP106801

Durchmusterung Catalogue BD+61 2169

FK5 Catalogue 3725

General Catalogue of Variable Stars V337 Cep

Visibility from Your Location

9 Cephei is circumpolar and transits at 06:05 UTC (altitude: 79.3°)

Set Location

Other stars in Cepheus