Triangulum Australe (The Southern Triangle) Constellation
Triangulum Australe (pronounced traɪˈæŋɡjʊləm ɔːˈstræliː, -ˈstreɪ-) is the Latin name of a constellation situated south of the celestial equator. As such, it is more easily visible from the southern hemisphere.
In English language this constellation is also known as "The Southern triangle" while in astronomical texts and literature this constellation is often abbreviated as "TrA" (according to the standard of the International Astronomical Union - IAU) or as "TrAu" (according to a naming convention used by NASA).
The Latin genitive of the constellation name is "Trianguli Australis" (pronounced traɪˈæŋɡjʊlaɪ ɔːˈstrælɪs) and it is used to identify some of the brightest stars in this constellation based on the Bayer or Flamsteed star naming convention. For instance: α Trianguli Australis (the brightest star of Triangulum Australe based on the Bayer catalog); or 23 Trianguli Australis (the 23th star in the constellation of Triangulum Australe based on the Flamsteed catalog).
Sky Chart of Triangulum Australe Constellation
Here we provide a simplified sky chart of the Triangulum Australe constellation. Alternatively it is possible to locate Triangulum Australe in the night sky using our Online Interactive Planetarium.

Visibility of Triangulum Australe Constellation
Location: Greenwich, UK
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London
Triangulum Australe is currently not visible from Greenwich, UK
The rise and set times provided here are just directional indications and they refer to a point approximately placed at the center of the constellation. In case of very large constellations these times can have little relevance.
Bright Stars in Triangulum Australe Constellation
The table below lists the top 20 brightest stars in the Triangulum Australe constellation. See also the complete list of 34 stars brighter than magnitude 6.5 (approximate) in the constellation of Triangulum Australe. Click on each star to see more details about it.
HR Number(*) | Star designation | Proper name | Visual magnitude | Color | Notes | |
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HR6217 | α Trianguli Australis | Atria | 1.92 | ⬤ | |
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HR5897 | β Trianguli Australis | 2.85 | ⬤ | Double; | |
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HR5671 | γ Trianguli Australis | 2.89 | ⬤ | Variable; | |
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HR6030 | δ Trianguli Australis | 3.85 | ⬤ | Double; | |
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HR5771 | ε Trianguli Australis | 4.11 | ⬤ | Double; | |
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HR6098 | ζ Trianguli Australis | 4.91 | ⬤ | ||
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HR5891 | κ Trianguli Australis | 5.09 | ⬤ | ||
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HR6204 | 5.13 | ⬤ | Variable; Multiple; | ||
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HR6125 | 5.2 | ⬤ | |||
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HR6109 | ι Trianguli Australis | 5.27 | ⬤ | Double; | |
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HR6151 | θ Trianguli Australis | 5.52 | ⬤ | ||
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HR5725 | 5.71 | ⬤ | |||
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HR5920 | 5.75 | ⬤ | Double; | ||
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HR6037 | 5.75 | ⬤ | |||
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HR5905 | 5.76 | ⬤ | |||
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HR5621 | 5.76 | ⬤ | |||
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HR6276 | 5.79 | ⬤ | |||
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HR5644 | 5.81 | ⬤ | Variable; | ||
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HR5713 | 5.89 | ⬤ | Variable; Double; | ||
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HR6172 | η1 Trianguli Australis | 5.91 | ⬤ | ||
...go to the complete list of 34 bright stars in the constellation of Triangulum Australe |
(*) HR stands for Harvard Revised Bright Star Catalogue, which is also known as the Yale Catalogue of Bright Stars.
Deep Sky Objects in Triangulum Australe Constellation
The table below lists all the deep sky objects in the Triangulum Australe constellation. See also the complete list of 9 deep sky objects in the constellation of Triangulum Australe. The list includes objects from the Messier, New General Catalogue (NGC) and Index Catalogue (IC).