θ Cephei (theta Cephei)
θ Cephei is a giant star in the constellation of Cepheus.
θ Cephei visual magnitude is 4.22. Because of its moderate brightness, θ Cephei should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.
The table below summarizes the key facts about θ Cephei:
Celestial coordinates and finder chart of θ Cephei
θ Cephei is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of θ Cephei are provided in the following table:
The simplified sky map below shows the position of θ Cephei in the sky:
Visibility of θ Cephei from your location
Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London
θ Cephei (theta Cephei) is circumpolar and transits at 12:33 UTC (altitude: 78.5°)
Digitized Sky Survey image of θ Cephei
The image below is a photograph of θ Cephei from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of θ Cephei is 0.044 arcsec per year in Right Ascension and -0.013 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of θ Cephei from the Sun and relative movement
θ Cephei is distant 135.61 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.
Spectral properties of θ Cephei
θ Cephei belongs to spectral class A7 and has a luminosity class of III corresponding to a giant star.
The red dot in the diagram below shows where θ Cephei is situated in the Hertzsprung–Russell diagram.
