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Horologium constellation

Horologium is a constellation of the southern sky. Its brightest star is α Horologii. Visibility at mid-northern latitudes (52° N): not visible — too far south in the sky.

  • —not visible at 52° N
  • α Horologiibrightest star, magnitude 3.9
  • HorHorologium
The constellation Horologium in the starry sky: its figure and its bright stars Achernar, Eridanus — magnitude 0.5. Open on the sky mapα Hydri — magnitude 2.9. Open on the sky mapα Horologii — magnitude 3.9. Open on the sky map N ↑← E
North is up, east is left — this is how the constellation looks in the sky. Click a star to open it on the sky map.

How to find the constellation Horologium

The constellation Horologium can’t be seen from mid-northern latitudes (52° N). At least part of it rises above the horizon south of 47° N.

LocationVisibility
40° NMadrid, New York, Beijingonly partly visible — its southern part never rises above the horizon
52° NLondon, Berlin, Warsawnot visible — too far south in the sky
60° NOslo, Helsinki, Saint Petersburgnot visible — too far south in the sky

Bright stars of the constellation

StarMagnitudeColorDistance
α Horologii 3.9orange—

Magnitude is a measure of a star’s brightness: the smaller the number, the brighter the star; on a dark night the naked eye can see stars down to magnitude 6.

Questions

How do you find the constellation Horologium in the sky?

The constellation Horologium can’t be seen from mid-northern latitudes (52° N). At least part of it rises above the horizon south of 47° N.

When is the best time of year to observe the constellation Horologium?

The constellation Horologium can’t be seen from mid-northern latitudes (52° N) at any time of year. At least part of it rises above the horizon south of 47° N.

What is the brightest star in the constellation Horologium?

α Horologii: magnitude 3.9, orange.

How many stars are there in the constellation Horologium?

With the naked eye on a perfectly dark night — with no light pollution and no Moon — you can see about 18 stars in the constellation (brighter than magnitude 6, within the constellation’s boundaries). In a city far fewer: usually only the stars of its figure.

Winter constellations

Find it in the sky tonightA sky map over your city: where the constellation Horologium is now and when it will rise.
Open the sky map