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Triangulum Australe Constellation

Triangulum Australe (Pronounciation:Try-ang-u-lum Ore-strale, Abbrev:TrA, Latin:Trianguli Australis) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Triangulum Australe takes up 109.978 sq. degrees of the night sky which equates to 0.27% of the night sky. The constellation gets its name as it name means The Southern Triangle . It was not one of the original constellations that had been devised by Ptolemy, instead it was created by Pieter Dirkszoon Keyser and Frederick de Houtman years later.

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

The brightest star in Triangulum Australe is Atria. There are 2 Extrasolar Planets (Exoplanets) in this constellation that are detailed on this site.

Triangulum Australe Star and Deep Space Object Count

The number of stars that have been catalogued as part of the Hipparcos Star Catalogue from Triangulum Australe is 462. The number of stars that are of magnitude 6.0 or lower in the constellation is 21. The number of stars in the constellation that make up the outline is 4.

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.

Stars of Interest

The nearest star to Earth is Zeta Trianguli Australis which is roughly about 39.52 Light Years from the Earth. The nearest star to the Earth with an exoplanet is HD 147018 which is about 140.1 Light Years. The furthest star that can be located in the constellation is HIP 79468 which is located about 54360.56 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 dimmest star that can be seen in Triangulum Australe with the naked eye is HD 145689. The dim star has an apparent magnitude of 5.95. 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

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.

There is no Greek Legend behind this constellation. It was created by Pieter Dirkszoon Keyser and Frederick de Houtman to fill in the voids in the astronomical charts.

There are no major meteor showers that radiate from within this constellation.

Triangulum Australe Facts

NameTriangulum Australe
Is a Zodiac Sign No
Brightest StarAtria
Area109.978 sq. deg.
Percentage of Night Sky0.27%
Size Position83rd
Hemisphere Southern
Site Exoplanet Count2
Meteor Shower Count0
Nearest StarZeta Trianguli Australis
Nearest Star with Exoplanet(s)HD 147018
Dimmest StarHD 145689
Furthest StarHIP 79468
Bright Star Count21
Hipparcos Star Count462
Main Star Count4
Messier Deep Space Object Count0
*Non-Messier Deep Space Object Count0
Bordering / Neighbouring / Surrounding ConstellationsNorma

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

Triangulum Australe Constellation Map

Triangulum Australe Constellation Star Map

The map was generated using Night Vision, an awesome free application by Brian Simpson.

List of Stars with Exoplanets in Triangulum Australe

StarDistance (Lt. Yrs.)Exoplanet CountDeclinationRight Ascension
HD 147018140.102-61d 41` 16.816h 23m 00.37

List of Named Stars in Triangulum Australe without Extrasolar Planets

As there's so many stars in the cosmos, not all the stars are listed here. The site has lots of stars not listed so if your star isn't listed and you know the Henry Draper or Hipparcos ID, type https://www.universeguide.com/star/ then followed by the HIPNNNNNN or HDNNNN where NNNNN is the number part of the name. The stars that I do list have either a traditional name, a bayer or other classification name.

StarDistance (Lt. Yrs.)DeclinationRight Ascension
Atria390.61-69d 01` 39.516h 48m 39.87
Betria40.37-63d 25` 47.115h 55m 08.81
Delta Trianguli Australis607.38-63d 41` 08.316h 15m 26.27
Epsilon Trianguli Australis201.71-66d 19` 00.915h 36m 43.19
Eta Trianguli Australis661.59-68d 17` 45.916h 41m 23.13
Gatria183.86-68d 40` 46.115h 18m 54.69
Iota Trianguli Australis126.57-64d 03` 28.816h 27m 57.27
Kappa Trianguli Australis1208.01-68d 36` 10.815h 55m 29.61
LP Trianguli Australis696.93-67d 06` 34.816h 46m 40.01
LX Trianguli Australis682.35-64d 31` 53.215h 27m 33.10
MX Trianguli Australis787.83-69d 16` 05.316h 59m 33.98
R Trianguli Australis3507.13-66d 29` 45.715h 19m 45.72
S Trianguli Australis1387.93-63d 46` 35.516h 01m 10.72
Theta Trianguli Australis342.25-65d 29` 43.216h 35m 44.77
U Trianguli Australis3136.19-62d 54` 38.016h 07m 19.01
X Trianguli Australis1173.25-70d 04` 46.015h 14m 19.17
Zeta Trianguli Australis39.52-70d 05` 04.816h 28m 27.80

Triangulum Australe Constellation's Star Breakdown

Type Breakdown

KLight Orange Star 3,700 - 5,200k101
BBlue-White 10,500 - 30,000k90
FYellow-White 6,000 - 7,500k81
AWhite 7,500 - 10,000k79
GYellow 5,200 - 6,000k78
MRed Dwarf Star <3,700k10

Size Breakdown

VMain Sequence152
IIINormal Giant150
IIBright Giant14
IbLess Luminous Supergiant8
WWolf-Rayet Star2
IaLuminous Supergiant1
IabIntermediate Luminous Supergiant1

Breakdown of Dwarf Stars by Type

VIIVII Dwarf Star1

Breakdown of Carbon Stars by Type

NN-Type Carbon Star1
CC-Type Carbon Star1

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