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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 5:06 
Transit: 12:56 
Sunset: 20:47
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All Constellations » Cepheus » 

θ Cephei (theta Cephei)

Above the horizon.  Circumpolar today
Alt: 41.23°   Az: 323.39°   Direction: North-West

θ Cephei is a giant star of spectral class A7 in the constellation of Cepheus.

θ Cephei visual magnitude is 4.22. Because of its moderate brightness, θ 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 θ Cephei (theta Cephei) star
DSS2 image of θ Cephei. The red arrow shows the motion of θ Cephei during the next 10000 years (7.33 arcmin in Right Ascension and -2.17 arcmin in declination);

Celestial Coordinates

Apparent

20h 30m 00s
+63° 04’ 48”
06h 31m 25s
03h 01m 25s

J2000

20h 29m 34s
+62° 59’ 39”

Galactic Coordinates

97.76°
13.8°

Finder Chart

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Finder chart for θ Cephei (theta Cephei).

Magnitude, Color, Spectral Class

4.22
Giant

1.12
A7III
8163K

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

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

Distance, Radial Speed, Proper Motion

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.

41.60
135.61
-7 km/s
0.044 arcsec/y
-0.013"/y

Alternative Designations

θ Cephei
(theta Cephei)
SAO18897
SAO18897

Visibility from Your Location

θ Cephei (theta Cephei) is circumpolar and transits at 04:49 UTC (altitude: 78.4°)