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All Constellations » Cepheus » 

δ Cephei (delta Cephei)

Above the horizon.  Circumpolar today
Alt: 62.00°   Az: 56.30°   Direction: East-North-East

δ Cephei is a variable and multiple supergiant star of spectral class F5 in the constellation of Cepheus.

δ Cephei visual magnitude is 3.75. Because of its moderate brightness, δ 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.

Image of δ Cephei (delta Cephei) star
DSS2 image of δ Cephei. The red arrow shows the motion of δ Cephei during the next 10000 years (2.50 arcmin in Right Ascension and 0.17 arcmin in declination);

Celestial Coordinates

Apparent

22h 30m 07s
+58° 32’ 44”
20h 46m 11s
19h 16m 18s

J2000

22h 29m 10s
+58° 24’ 55”

Galactic Coordinates

105.19°
0.53°

Finder Chart

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Finder chart for δ Cephei (delta Cephei).

Magnitude, Color, Spectral Class

3.75
Supergiant

-3.64
F5I
5968K

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

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

Star System Properties

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

3.75
6.15
2.4
40.8 arcsec

Distance, Radial Speed, Proper Motion

δ Cephei is distant 981.93 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

301.20
981.93
-15 km/s
0.015 arcsec/y
0.001"/y

Alternative Designations

δ Cephei
(delta Cephei)
SAO34508
SAO34508

Visibility from Your Location

δ Cephei (delta Cephei) is circumpolar and transits at 06:45 UTC (altitude: 82.9°)