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public LocationGreenwich, UK
Sunrise: 5:12 
Transit: 13:06 
Sunset: 20:59
wb_twilight   (Civil Twilight)   What's Visible Now?
All Constellations » Cetus » 

25 Ceti

Below the horizon.  Rise: 0:20 | Tran: 5:58 | Set: 11:32
Alt: -26.28°   Az: 61.75°   Direction: East-North-East

25 Ceti is a double hypergiant star of spectral class K0 in the constellation of Cetus.

25 Ceti visual magnitude is 5.43. Because of its faintness, 25 Ceti 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.

Image of 25 Ceti star
DSS2 image of 25 Ceti. The red arrow shows the motion of 25 Ceti during the next 1000 years (-1.80 arcmin in Right Ascension and -1.77 arcmin in declination);

Celestial Coordinates


01h 04m 17s
-04° 42’ 18”
15h 29m 40s
16h 33m 58s


01h 03m 02s
-04° 50’ 12”

Galactic Coordinates


Finder Chart

Finder chart 25 Ceti star
Simplified finder chart for 25 Ceti.

Magnitude, Color, Spectral Class



The red dot in the diagram below shows where 25 Ceti is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 25 Ceti. Attribution: Richard Powell / CC BY-SA

Star System Properties

25 Ceti 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 25 Ceti double sysyem:

99.9 arcsec

Distance, Radial Speed, Proper Motion

25 Ceti is distant 410.06 light years from the Sun and it is moving far from the Sun at the speed of 15 kilometers per second.

15 km/s
-0.108 arcsec/y

Alternative Designations


Visibility from Your Location

Today's 25 Ceti rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 94.7°
Max altitude: 33.8°
Azimuth: 265.3°