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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: 6:48  
clear_day Transit: 12:11  
SunsetSet: 17:34
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All Constellations » Horologium » 

η Horologii (eta Horologii)

Altitude: -63.7°   Azimuth: 109.5°   Direction: East-South-East

η Horologii is a main-sequence star in the constellation of Horologium.

η Horologii visual magnitude is 5.31. Because of its reltive faintness, η Horologii should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of η Horologii is 0.1 arcsec per year in Right Ascension and -0.019 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of η Horologii (eta Horologii) star
DSS2 image of η Horologii. The red arrow shows the motion of η Horologii during the next 1000 years (1.67 arcmin in Right Ascension and -0.32 arcmin in declination);

Key facts about η Horologii


η Horologii (eta Horologii) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -63.7°
Azimuth: 109.5°
Direction: East-South-East

Celestial coordinates and finder chart of η Horologii

η 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 η Horologii are provided in the following table:

02h 37m 24s
-52° 32’ 35”

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

Finder chart η Horologii (eta Horologii) star
Simplified finder chart for η Horologii (eta Horologii).

Visibility of η Horologii from your location

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

η Horologii (eta Horologii) is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of η Horologii from the Sun and relative movement

η Horologii is distant 144.95 light years from the Sun and it is moving towards the Sun at the speed of 3 kilometers per second.

44.46 pc
144.95 ly
-3 km/s
0.1 arcsec/year
-0.019 arcsec/year

Spectral properties of η Horologii

η Horologii belongs to spectral class A6 and has a luminosity class of V corresponding to a main-sequence star.


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

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

Alternative designations of η Horologii

η Horologii
(eta Horologii)