Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:46  
clear_day Transit: 12:56  
SunsetSet: 21:07 south
sunny DaytimeWhat's Visible Now
All Constellations » Cetus » 

27 Ceti

Altitude: -29.0°   Azimuth: 292.2°   Direction: West-North-West

27 Ceti is a hypergiant star in the constellation of Cetus.

27 Ceti visual magnitude is 6.12. Because of its reltive faintness, 27 Ceti should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 27 Ceti:


27 Ceti is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -29.0°
Azimuth: 292.2°
Direction: West-North-West

Celestial coordinates and finder chart of 27 Ceti

27 Ceti is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 27 Ceti are provided in the following table:

01h 05m 36s
-09° 58’ 45”

The simplified sky map below shows the position of 27 Ceti in the sky:

Finder chart 27 Ceti star
Simplified finder chart for 27 Ceti.

Visibility of 27 Ceti from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's 27 Ceti rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 100.0°
Max altitude: 28.5°
Azimuth: 260.0°
27 Ceti is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 27 Ceti

The image below is a photograph of 27 Ceti 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 27 Ceti is -0.034 arcsec per year in Right Ascension and -0.033 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 27 Ceti star
DSS2 image of 27 Ceti. The red arrow shows the motion of 27 Ceti during the next 10000 years (-5.67 arcmin in Right Ascension and -5.50 arcmin in declination);

Distance of 27 Ceti from the Sun and relative movement

27 Ceti is distant 308.13 light years from the Sun and it is moving far from the Sun at the speed of 12 kilometers per second.

94.52 pc
308.13 ly
12 km/s
-0.034 arcsec/year
-0.033 arcsec/year

Spectral properties of 27 Ceti

27 Ceti belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where 27 Ceti is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 27 Ceti. Attribution: Richard Powell / CC BY-SA

Alternative designations of 27 Ceti