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 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
|Name||Bayer||Distance (Lt.Yr.)||Right Ascension||Declination||Spectral Type||Colour|
|Delta Normae||Delta Normae||122.34||16h 06m 29.42||-45d 10` 23.8||Am||White|
|Epsilon Normae||Epsilon Normae||530.35||16h 27m 11.05||-47d 33` 17.0||B4V||Blue/White|
|Eta Normae||Eta Normae||219.49||16h 03m 12.86||-49d 13` 47.0||G8III||Yellow|
|Is a Zodiac Sign||No|
|Brightest Star||Gamma1 Normae|
|Area||165.29 sq. deg.|
|Percentage of Night Sky||0.4%|
|Site Exoplanet Count||4|
|Meteor Shower Count||1|
|Nearest Star||HIP 79537|
|Nearest Star with Exoplanet(s)||HD 142415|
|Brightest Star||Gamma1 Normae|
|Dimmest Star||HD 141544|
|Furthest Star||HIP 76661|
|Bright Star Count||26|
|Hipparcos Star Count||681|
|Main Star Count||3|
|Messier Deep Space Object Count||0|
|Bordering / Neighbouring / Surrounding Constellations||Lupus|
*Note: The number of Non-Messier Deep Space Object Count relates to how many are covered on this site not how many there are.
|RCW103||Supernova Remnant||10,700||51:01:48||16h 17h 28m 80|
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