Universe Guide

Norma, The Rule Constellation

Norma Constellation Star Map

Norma (Pronounciation:Nore-ma, Abbrev:Nor, Latin:Normae) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Norma takes up 165.29 sq. degrees of the night sky which equates to 0.4% of the night sky. Norma is the 74th largest in terms of size in the night sky.

The constellation name means The Rule . 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 3 stars that make up the main constellation. The hipparcos satellite scanned and detailed 681 stars. There are 26 stars that can be seen with the naked eye in the constellation on a very clear night sky.

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

There are 4 Extrasolar Planets (Exoplanets) in this constellation that are detailed on this site. There is a dedicated page for exoplanets in Norma.

There are no deep space objects that were identified by Charles Messier in this constellation. There are 1 non-Messier deep space objects that are covered on this site and the list is below.

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 Norma

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 122.34 light years and the furthest main star is a distance of 530.35 light years. The average distance to the main stars is 290.73 light years.

Norma 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 79537, Norma's Nearest Star

The nearest star to Earth is HIP 79537 which is roughly about 45.29 Light Years from the Earth. The nearest star to the Earth with an exoplanet is HD 142415 which is about 111.66 Light Years.

HIP 76661, Norma's Furthest Star

The furthest star that is located in the constellation is HIP 76661 and it is 326163.3 light years away from the Sun. The furthest figure is derived from either the 1997 or 2007 Hipparcos star catalogue parallax figure and it has been known to produce distances that are wrong.

Gamma1 Normae, Brightest Star in Norma

The brightest star in Norma is Gamma1 Normae and is located about 7.24 light years from the Sun. The star has a apparent magnitude of 4.97 but an absolute magnitude of -3.30 when the star is viewed from a distance of 10 Parsecs or 32.6 Light Years. The brightest star in the Norma constellation only has the Bayer designation of Gamma, there is Alpha or Beta Normae stars.

HD 141544, Norma's Dimmest Visible Star

The dimmest star that can be seen in Norma with the naked eye is HD 141544. The dim star has an apparent magnitude of 6. 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.

Norma Mythology

There is no Greek Legend behind this constellation. It was created by Abbé Nicolas Louis de Lacaille to fill in the voids in the astronomical charts. Surprisingly, there are no stars designated as Alpha Normae or Beta Normae. The first in the Greek alphabet is Gamma Normae. If I'm wrong, let me know but I'm not aware of Alpha or Beta.

Meteor Showers Radiating from Norma

There are 1 Meteor Showers that occur during the year within this constellation based on information gathered from Adam Mickiewicz University (Poland). The list below are major ones and which I have a date period for.

The Meteor Shower is known as the Gamma Normids.

List of Main Stars in Norma

The following list contains the stars that make up the constellation. For a larger list of stars in the entire constellation area, please visit the For a list of named stars, that is stars that don't start HD or HIP, please visit Norma Star List page.

NameBayerDistance (Lt.Yr.)Right AscensionDeclinationSpectral TypeColour
Delta NormaeDelta Normae122.3416h 06m 29.42-45d 10` 23.8AmWhite
Epsilon NormaeEpsilon Normae530.3516h 27m 11.05-47d 33` 17.0B4VBlue/White
Eta NormaeEta Normae219.4916h 03m 12.86-49d 13` 47.0G8IIIYellow

Norma Facts

Is a Zodiac Sign No
Brightest StarGamma1 Normae
Area165.29 sq. deg.
Percentage of Night Sky0.4%
Size Position74th
Hemisphere Southern
Site Exoplanet Count4
Meteor Shower Count1
Nearest StarHIP 79537
Nearest Star with Exoplanet(s)HD 142415
Brightest StarGamma1 Normae
Dimmest StarHD 141544
Furthest StarHIP 76661
Bright Star Count26
Hipparcos Star Count681
Main Star Count3
Messier Deep Space Object Count0
Bordering / Neighbouring / Surrounding ConstellationsLupus
Triangulum Australe

*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 Norma

NameTypeDistanceDeclinationRight Ascension
RCW 103Supernova Remnant10,700-51:01:4816h 17h 28m 80

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