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

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
Today's δ Cephei (delta Cephei) rise, transit and set times from Kalutara, Sri Lanka are the following (all times relative to the local timezone Asia/Colombo):