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
Your support keeps us free & ad-free » Donate
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 7:01  
clear_day Transit: 12:12  
SunsetSet: 17:24
sleep NighttimeWhat's Visible Now?
All Constellations » Horologium » 

ι Horologii (iota Horologii)

Altitude: -52.5°   Azimuth: 246.0°   Direction: West-South-West

ι Horologii is a hypergiant star in the constellation of Horologium.

ι Horologii visual magnitude is 5.41. Because of its reltive faintness, ι 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 ι Horologii is 0.334 arcsec per year in Right Ascension and 0.222 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of ι Horologii (iota Horologii) star
DSS2 image of ι Horologii. The red arrow shows the motion of ι Horologii during the next 1000 years (5.57 arcmin in Right Ascension and 3.70 arcmin in declination);

Key facts about ι Horologii


ι Horologii (iota Horologii) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -52.5°
Azimuth: 246.0°
Direction: West-South-West

Celestial coordinates and finder chart of ι Horologii

ι 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 ι Horologii are provided in the following table:

02h 42m 33s
-50° 48’ 01”

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

Finder chart ι Horologii (iota Horologii) star
Simplified finder chart for ι Horologii (iota Horologii).

Visibility of ι Horologii from your location

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

ι Horologii (iota Horologii) is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of ι Horologii from the Sun and relative movement

ι Horologii is distant 56.21 light years from the Sun and it is moving far from the Sun at the speed of 16 kilometers per second.

17.24 pc
56.21 ly
16 km/s
0.334 arcsec/year
0.222 arcsec/year

Spectral properties of ι Horologii

ι Horologii belongs to spectral class G0 and has a luminosity class of V corresponding to a hypergiant star.


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

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

Alternative designations of ι Horologii

ι Horologii
(iota Horologii)