Universe Guide

Caelum, The Chisel Constellation

Caelum Constellation Star Map

Caelum (Pronounciation:Cee-lum, Abbrev:Cae, Latin:Caeli) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Caelum takes up 124.865 sq. degrees of the night sky which equates to 0.3% of the night sky. Caelum is the 81st largest in terms of size in the night sky.

The constellation name means The Chisel . It was not one of the original constellations that had been devised by Ptolemy, instead it was created by Abbé Nicolas Louis de Lacaille years later.

There are 4 stars that make up the main constellation. The hipparcos satellite scanned and detailed 342 stars. There are 7 stars that can be seen with the naked eye in the constellation on a very clear night sky.

Caelum is not a member of the Zodiac group of twelve constellations that appear when the Sun sets. Caelum is a southern hemispheric constellation which means it can't be seen easily or at all from the northern hemisphere.

There are 3 Extrasolar Planets (Exoplanets) in this constellation that are detailed on this site. There is a dedicated page for exoplanets in Caelum.

There are no deep space objects that were identified by Charles Messier in this constellation. There are no non-Messier deep space objects in this constellation that are covered at present on this site.

The image at the top right of this page was generated using Night Vision, a free to use and download application by Brian Simspon.

Distance to Caelum

You can't just go to one location and arrive at the constellation because the constellation is made up of stars at different locations and different distances. The nearest main star in the constellation is at a distance of 65.77 light years and the furthest main star is a distance of 704.46 light years. The average distance to the main stars is 261.26 light years.

Caelum Star Facts

The caveat of these stars are that they are catalogued on this site. If you know of a star that is nearer or further then do let me know in the comments and I'll add it to the site. The stars mentioned are from the Hipparcos catalogue or have been added because of their special status.

HIP 22451, Caelum's Nearest Star

The nearest star to Earth is HIP 22451 which is roughly about 57.88 Light Years from the Earth. The nearest star to the Earth with an exoplanet is HIP 21934 which is about 113.37 Light Years.

HIP 23249, Caelum's Furthest Star

The furthest star that is located in the constellation is HIP 23249 and it is 12080.12 light years away from the Sun.

Alpha Caeli, Brightest Star in Caelum

The brightest star in Caelum is Alpha Caeli and is located about 161.74 light years from the Sun. The star has a apparent magnitude of 4.44 but an absolute magnitude of 2.92 when the star is viewed from a distance of 10 Parsecs or 32.6 Light Years. The star is recognised as being the brightest in the constellation as it has the Bayer status of Alpha.

HD 32515, Caelum's Dimmest Visible Star

The dimmest star that can be seen in Caelum with the naked eye is HD 32515. The dim star has an apparent magnitude of 5.92. The dimmest star that a person is able to see with their naked eye is 6.0 magnitude based on the table in the reference. Ref: University of Michigan.

Caelum Mythology

There is no Greek Mythological Legend behind this constellation. It was created by Abbé Nicolas Louis de Lacaille to fill in the voids in the astronomical charts. It is a very faint constellation so the Ancients wouldn't seen fit to put anything there.

Caelum Facts

Is a Zodiac Sign No
Brightest StarAlpha Caeli
Area124.865 sq. deg.
Percentage of Night Sky0.3%
Size Position81st
Hemisphere Southern
Site Exoplanet Count3
Meteor Shower Count0
Nearest StarHIP 22451
Nearest Star with Exoplanet(s)HIP 21934
Brightest StarAlpha Caeli
Dimmest StarHD 32515
Furthest StarHIP 23249
Bright Star Count7
Hipparcos Star Count342
Main Star Count4
Messier Deep Space Object Count0
Bordering / Neighbouring / Surrounding ConstellationsEridanus

*Note: The number of Non-Messier Deep Space Object Count relates to how many are covered on this site not how many there are.

List of Deep Space Objects (Galaxies, Nebulas, Supernovas, etc) in Caelum

NameTypeDistanceDeclinationRight Ascension
NGC 1558Galaxy-45 01 53.3604 20 16m 179
NGC 1567Spiral Galaxy-48 15 16.91988050604 21 08m 7582856163
NGC 1570Spiral Galaxy-43 37 46.3704 22 08m 948
NGC 1571Galaxy-43 37 46.3704 22 08m 948
NGC 1572Barred Spiral Galaxy-40 36 03.5004 22 42m 814

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