μ Cephei (mu Cephei)
μ Cephei is a variable and multiple supergiant star of spectral class M2 in the constellation of Cepheus.
μ Cephei visual magnitude is 4.08. Because of its moderate brightness, μ 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 μ Cephei (mu Cephei).
Magnitude, Color, Spectral Class
The red dot in the diagram below shows where μ Cephei is situated in the Hertzsprung–Russell diagram.
Star System Properties
μ Cephei 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 μ Cephei double sysyem:
Distance, Radial Speed, Proper Motion
μ Cephei is distant 5,258.06 light years from the Sun and it is moving far from the Sun at the speed of 19 kilometers per second.
Alternative Designations
Visibility from Your Location
μ Cephei (mu Cephei) is circumpolar and transits at 06:15 UTC (altitude: 82.6°)