Name a Star in the Horologium Constellation

Modified: July 1, 2023     Author: International Star Registry

International Star registry 45th anniversary logo surrounded by stars.

Horologium (Latin for “clock”) is a southern hemisphere constellation located near constellations Caelum, Dorado, Eridanus, Hydrus and Reticulum. It was first cataloged by the French astronomer Nicolas Louis de Lacaille in the mid-18th century. It can be viewed from areas South of the United States. 

Horologium contains several interesting astronomical objects, including three stars with exoplanets. One of the most notable stars in Horologium is R Horologii, a Mira variable star located approximately 900 light-years from Earth. Another interesting star in Horologium is “Alpha Horologii” which is a giant star located approximately 117 light-years from the Sun. Alpha Horologii has a magnitude of 3.86 and is visible from the southern hemisphere.  In addition to these stars, Horologium also contains several notable deep sky objects. One of these objects is NGC 1261, a globular cluster located approximately 53,000 light-years from Earth.  The most famous of these deep sky objects is the Horologium Supercluster. This cluster is one of the most massive and luminous globular clusters in the Milky Way, spanning 550,000,000 light years across. It contains over 300,000 galaxies and is a popular target for amateur astronomers. Another deep sky object in Horologium is NGC 1512, a barred spiral galaxy discovered in 1826 by the Scottish astronomer James Dunlop.  

For those looking for a unique and meaningful gift, International Star Registry offers the opportunity to name a star in honor of a special occasion. As a 50th birthday gift idea, you can name a star after the celebrant and have their name recorded in this permanent star catalog for eternity. This gift will not only be a special memento, but it will also give the recipient a personal connection to the cosmos. 

At, you can buy a star package that includes the star’s name, location, and a customized star certificate. There are a variety of framing options and upgrades so you can choose the perfect package to fit your budget. Once you’ve named your star, you’ll receive a beautiful certificate that you can display in your home or office plus a custom star map that shows the location of your star in the night sky. 

Symbol: Hor 

Right Ascension: 03:40 

Declination: -50 

Diameter (°): 21 

Area (square °): 249 

Opposition: Nov 19 

Size Rank: 58th 

Brightness Rank: 83rd 

Genitive: Horologii   


Major or notable stars in Horologium   

α Horologii (Alpha Horologii) – The pendulum of the clock 

R Horologii (HD 18242) 

β Horologii (Beta Horologii) 

δ Horologii (Delta Horologii) 

ι Horologii (Iota Horologii)  

GJ 1061   


Deep Sky Objects in Horologium   

Horologium Supercluster 

NGC 1261 

Arp-Madore 1 (AM1) 

NGC 1512 

NGC 1510 

NGC 1483 

Miltron’s Galaxy – NGC 1433 

NGC 1448

In conclusion, Horologium is a fascinating constellation that contains a wealth of astronomical objects, from visible stars to galaxies and star clusters in the far southern sky. Whether you are an avid star gazer or a professional researcher, Horologium has something to offer for everyone. So next time you are out stargazing, be sure to look for the constellation Horologium and its many wonders. And, for those looking for a unique and meaningful gift, consider naming a star through International Star Registry, a gift that will last a lifetime. 




Q. What is Horologium? 

Horologium is the 58th constellation in size, occupying an area of 249 square degrees in the night sky.  

Q. What is Horologium constellation? 

It is a small, faint constellation that was created in the 18th century by the French astronomer Nicolas Louis de Lacaille. 

Q. What is Alpha Horologii? 

Alpha Horologii is an orange-hued giant star, located at around 115 light-years away from our Solar System and is the brightest star in the Horologium constellation. 

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