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 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.
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.
|Is a Zodiac Sign||No|
|Area||109.978 sq. deg.|
|Percentage of Night Sky||0.27%|
|Site Exoplanet Count||2|
|Meteor Shower Count||0|
|Nearest Star||Zeta Trianguli Australis|
|Nearest Star with Exoplanet(s)||HD 147018|
|Dimmest Star||HD 145689|
|Furthest Star||HIP 79468|
|Bright Star Count||21|
|Hipparcos Star Count||462|
|Main Star Count||4|
|Messier Deep Space Object Count||0|
|*Non-Messier Deep Space Object Count||0|
|Bordering / Neighbouring / Surrounding Constellations||Norma|
*Note: The number of Non-Messier Deep Space Object Count relates to how many are covered on this site not how many there are.
The map was generated using Night Vision, an awesome free application by Brian Simpson.
|Star||Distance (Lt. Yrs.)||Exoplanet Count||Declination||Right Ascension|
|HD 147018||140.10||2||-61d 41` 16.8||16h 23m 00.37|
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.
|Star||Distance (Lt. Yrs.)||Declination||Right Ascension|
|Atria||390.61||-69d 01` 39.5||16h 48m 39.87|
|Betria||40.37||-63d 25` 47.1||15h 55m 08.81|
|Delta Trianguli Australis||607.38||-63d 41` 08.3||16h 15m 26.27|
|Epsilon Trianguli Australis||201.71||-66d 19` 00.9||15h 36m 43.19|
|Eta Trianguli Australis||661.59||-68d 17` 45.9||16h 41m 23.13|
|Gatria||183.86||-68d 40` 46.1||15h 18m 54.69|
|Iota Trianguli Australis||126.57||-64d 03` 28.8||16h 27m 57.27|
|Kappa Trianguli Australis||1208.01||-68d 36` 10.8||15h 55m 29.61|
|LP Trianguli Australis||696.93||-67d 06` 34.8||16h 46m 40.01|
|LX Trianguli Australis||682.35||-64d 31` 53.2||15h 27m 33.10|
|MX Trianguli Australis||787.83||-69d 16` 05.3||16h 59m 33.98|
|R Trianguli Australis||3507.13||-66d 29` 45.7||15h 19m 45.72|
|S Trianguli Australis||1387.93||-63d 46` 35.5||16h 01m 10.72|
|Theta Trianguli Australis||342.25||-65d 29` 43.2||16h 35m 44.77|
|U Trianguli Australis||3136.19||-62d 54` 38.0||16h 07m 19.01|
|X Trianguli Australis||1173.25||-70d 04` 46.0||15h 14m 19.17|
|Zeta Trianguli Australis||39.52||-70d 05` 04.8||16h 28m 27.80|
|K||Light Orange Star 3,700 - 5,200k||101|
|B||Blue-White 10,500 - 30,000k||90|
|F||Yellow-White 6,000 - 7,500k||81|
|A||White 7,500 - 10,000k||79|
|G||Yellow 5,200 - 6,000k||78|
|M||Red Dwarf Star <3,700k||10|
|Ib||Less Luminous Supergiant||8|
|Iab||Intermediate Luminous Supergiant||1|
|VII||VII Dwarf Star||1|
|N||N-Type Carbon Star||1|
|C||C-Type Carbon Star||1|