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public LocationGreenwich, UK
Sunrise: 4:43 
Transit: 13:01 
Sunset: 21:18
wb_twilight   (Nautical Twilight)   What's Visible Now?
All Constellations » Triangulum Australe » 

Atria - α Trianguli Australis (alpha Trianguli Australis)

Below the horizon.  Never rises today
Altitude: -36.4°   Azimuth: 200.5°   Direction: South-South-West

Atria, also designated as α Trianguli Australis (alpha Trianguli Australis), is a bright giant star of spectral class K2 in the constellation of Triangulum Australe.

Atria visual magnitude is 1.92, making it the 41th brightest star in the sky. Because of its brightness, Atria is clearly visible to the naked eye when observed from locations with dark skies, and should be also quite easily visible from light polluted areas.

Celestial coordinates and finder chart of Atria

Finder chart Atria - α Trianguli Australis (alpha Trianguli Australis) star
Simplified finder chart for Atria - α Trianguli Australis (alpha Trianguli Australis).

Atria is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Atria are provided in the following table:

16h 48m 39s
-69° 01’ 40”
Triangulum Australe
Image of Atria - α Trianguli Australis (alpha Trianguli Australis) star
DSS2 image of Atria. The red arrow shows the motion of Atria during the next 10000 years (2.33 arcmin in Right Ascension and -5.67 arcmin in declination);

Key facts about Atria

Bright giant

and has a luminosity class of II corresponding to a bright giant star.


The red dot in the diagram below shows where Atria is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of Atria. Attribution: Richard Powell / CC BY-SA

Distance of Atria from the Sun and relative movement

Atria is distant 415.29 light years from the Sun and it is moving towards the Sun at the speed of 3 kilometers per second.

127.39 pc
415.29 ly
-3 km/s
0.014 arcsec/year
-0.034 arcsec/year

Alternative designations of Atria

α Trianguli Australis
(alpha Trianguli Australis)

Visibility of Atria from your location

Atria - α Trianguli Australis (alpha Trianguli Australis) is currently not visible from Greenwich, UK