Your guide to the Solar System and the night sky
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🌎  Greenwich, United Kingdom [change]

ο Capricorni (omicron Capricorni)

ο Capricorni is a double main-sequence star in the constellation of Capricornus.

ο Capricorni visual magnitude is 5.94. Because of its reltive faintness, ο Capricorni 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 ο Capricorni:

ο Capricorni (omicron Capricorni) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of ο Capricorni

ο Capricorni 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 ο Capricorni are provided in the following table:

20h 29m 53s
-18° 34’ 59”

The simplified sky map below shows the position of ο Capricorni in the sky:

Finder chart ο Capricorni (omicron Capricorni) star
Simplified finder chart for ο Capricorni (omicron Capricorni).

Visibility of ο Capricorni from your location

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

Today's ο Capricorni (omicron Capricorni) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 108.6°
Max altitude: 19.9°
Azimuth: 251.4°
ο Capricorni (omicron Capricorni) is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of ο Capricorni

The image below is a photograph of ο Capricorni 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 ο Capricorni is 0.026 arcsec per year in Right Ascension and -0.082 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ο Capricorni (omicron Capricorni) star
DSS2 image of ο Capricorni. The red arrow shows the motion of ο Capricorni during the next 10000 years (4.33 arcmin in Right Ascension and -13.67 arcmin in declination);

Distance of ο Capricorni from the Sun and relative movement

ο Capricorni is distant 238.83 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

73.26 pc
238.83 ly
-12 km/s
0.026 arcsec/year
-0.082 arcsec/year

Spectral properties of ο Capricorni

ο Capricorni belongs to spectral class A3 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where ο Capricorni is situated in the Hertzsprung–Russell diagram.

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

ο Capricorni star system properties

ο Capricorni is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the ο Capricorni double sysyem:

21.9 arcsec

Alternative designations of ο Capricorni

ο Capricorni
(omicron Capricorni)
12 Capricorni