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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:59  
clear_day Transit: 12:12  
SunsetSet: 17:25
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All Constellations » Horologium » 

γ Horologii (gamma Horologii)

Altitude: -25.2°   Azimuth: 182.0°   Direction: South

γ Horologii is a double giant star in the constellation of Horologium.

γ Horologii visual magnitude is 5.74. Because of its reltive faintness, γ Horologii should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The proper motion of γ Horologii is 0.022 arcsec per year in Right Ascension and -0.009 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of γ Horologii (gamma Horologii) star
DSS2 image of γ Horologii. The red arrow shows the motion of γ Horologii during the next 10000 years (3.67 arcmin in Right Ascension and -1.50 arcmin in declination);

Key facts about γ Horologii


γ Horologii (gamma Horologii) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -25.2°
Azimuth: 182.0°
Direction: South

Celestial coordinates and finder chart of γ Horologii

γ Horologii is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of γ Horologii are provided in the following table:

02h 45m 27s
-63° 42’ 15”

The simplified sky map below shows the position of γ Horologii in the sky:

Finder chart γ Horologii (gamma Horologii) star
Simplified finder chart for γ Horologii (gamma Horologii).

Visibility of γ Horologii from your location

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

γ Horologii (gamma Horologii) is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of γ Horologii from the Sun and relative movement

γ Horologii is distant 178.83 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

54.85 pc
178.83 ly
-11 km/s
0.022 arcsec/year
-0.009 arcsec/year

Spectral properties of γ Horologii

γ Horologii belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where γ Horologii is situated in the Hertzsprung–Russell diagram.

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

γ Horologii star system properties

γ Horologii 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 γ Horologii double sysyem:

20 arcsec

Alternative designations of γ Horologii

γ Horologii
(gamma Horologii)