We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Donate now and help us to keep this site free and ad-free!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:47  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sleep NighttimeWhat's Visible Now?
All Constellations » Cetus » 

84 Ceti

Altitude: 37.8°   Azimuth: 180.1°   Direction: South

84 Ceti is a variable and double sub-giant star in the constellation of Cetus.

84 Ceti visual magnitude is 5.71. Because of its reltive faintness, 84 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 84 Ceti:


84 Ceti is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 37.8°
Azimuth: 180.1°
Direction: South

Celestial coordinates and finder chart of 84 Ceti

84 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 84 Ceti are provided in the following table:

02h 41m 13s
-00° 41’ 44”

The simplified sky map below shows the position of 84 Ceti in the sky:

Finder chart 84 Ceti star
Simplified finder chart for 84 Ceti.

Visibility of 84 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 84 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: 90.7°
Max altitude: 37.8°
Azimuth: 269.3°

Digitized Sky Survey image of 84 Ceti

The image below is a photograph of 84 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 84 Ceti is 0.214 arcsec per year in Right Ascension and -0.136 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of 84 Ceti star
DSS2 image of 84 Ceti. The red arrow shows the motion of 84 Ceti during the next 1000 years (3.57 arcmin in Right Ascension and -2.27 arcmin in declination);

Distance of 84 Ceti from the Sun and relative movement

84 Ceti is distant 70.50 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

21.63 pc
70.50 ly
8 km/s
0.214 arcsec/year
-0.136 arcsec/year

Spectral properties of 84 Ceti

84 Ceti belongs to spectral class F7 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where 84 Ceti is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 84 Ceti. Attribution: Richard Powell / CC BY-SA

84 Ceti star system properties

84 Ceti is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the 84 Ceti double sysyem:

4 arcsec

Alternative designations of 84 Ceti