δ Cephei (delta Cephei)
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.
Celestial Coordinates
Apparent
J2000
Galactic Coordinates
Finder Chart
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Finder chart for δ Cephei (delta Cephei).
Magnitude, Color, Spectral Class
The red dot in the diagram below shows where δ Cephei is situated in the Hertzsprung–Russell diagram.
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:
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.
Alternative Designations
Visibility from Your Location
δ Cephei (delta Cephei) is circumpolar and transits at 17:22 UTC (altitude: 82.9°)