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public LocationGreenwich, UK
Sunrise: 5:01 
Transit: 13:04 
Sunset: 21:06
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All Constellations » Cepheus » 

16 Cephei

Above the horizon.  Circumpolar today
Alt: 53.52°   Az: 332.60°   Direction: North-North-West

16 Cephei is a double main-sequence star of spectral class F5 in the constellation of Cepheus.

16 Cephei visual magnitude is 5.03. Because of its faintness, 16 Cephei is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

16 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.

Image of 16 Cephei star
DSS2 image of 16 Cephei. The red arrow shows the motion of 16 Cephei during the next 1000 years (-1.13 arcmin in Right Ascension and -2.68 arcmin in declination);

Celestial Coordinates


21h 59m 35s
+73° 17’ 53”
04h 48m 53s
02h 48m 29s


21h 59m 15s
+73° 10’ 48”

Galactic Coordinates


Finder Chart

Finder chart 16 Cephei star
Simplified finder chart for 16 Cephei.

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where 16 Cephei is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 16 Cephei. Attribution: Richard Powell / CC BY-SA

Star System Properties

16 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 16 Cephei double sysyem:

131.4 arcsec

Distance, Radial Speed, Proper Motion

16 Cephei is distant 122.23 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

37.50 pc
122.23 ly
-21 km/s
-0.068 arcsec/y
-0.161 "/y

Alternative Designations


Visibility from Your Location

16 Cephei is circumpolar and transits at 02:21 UTC (altitude: 68.2°)