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Triangulum Australe (The Southern Triangle)

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).

Triangulum Australe is below the horizon from Greenwich, United Kingdom [change].
Available Resources for Triangulum Australe

Sky chart of Triangulum Australe from your location

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.

Chart of  constellation
This constellation image is derivatve work based on original work by IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) CC-BY-3.0.

Visibility of Triangulum Australe from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Triangulum Australe is currently not visible from Greenwich, United Kingdom [change]

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.

Top bright stars in Triangulum Australe

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
HR6217 α Trianguli Australis Atria 1.92
HR5897 β Trianguli Australis 2.85 Double;
HR5671 γ Trianguli Australis 2.89 Variable;
HR6030 δ Trianguli Australis 3.85 Double;
HR5771 ε Trianguli Australis 4.11 Double;
HR6098 ζ Trianguli Australis 4.91
HR5891 κ Trianguli Australis 5.09
HR6204 5.13 Variable; Multiple;
HR6125 5.2
HR6109 ι Trianguli Australis 5.27 Double;
HR6151 θ Trianguli Australis 5.52
HR5725 5.71
HR6037 5.75
HR5920 5.75 Double;
HR5905 5.76
HR5621 5.76
HR6276 5.79
HR5644 5.81 Variable;
HR5713 5.89 Variable; Double;
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.

Top deep sky objects in Triangulum Australe

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).

Name Type Magnitude
NGC 6025 Open Cluster 5.1 (V)
NGC 5979 Planetary Nebula 11.5 (V)
NGC 5938 Galaxy 11.9 (B)
IC 4585 Galaxy 13 (B)
IC 4595 Galaxy 13.1 (B)
NGC 5844 Planetary Nebula 13.2 (B)
IC 4584 Galaxy 13.44 (B)
NGC 6183 Galaxy 14.09 (B)
IC 4571 Galaxy 14.64 (B)