|Fixed star: ATRIA|
|Constellation: Alpha (α) Triangulum Australis|
|Longitude 1900: 19SAG30||Longitude 2000: 20SAG54|
|Declination 1900: -68.51'||Declination 2000: -69.02'|
|Right ascension: 16h 48m||Latitude: -46.09'|
|Spectral class: K5||Magnitude: 1.9|
Alpha (α) Triangulum Australis, Atria, is a star in the constellation of the Southern Triangle.
Alpha (α Atria), beta (β) and gamma (γ), 3.1 each, were—perhaps are now—the seamen's Triangle Stars.
The constellation was given the title "the Three Patriarchs", believed to refer to Abraham, Isaac, and Jacob, by Christian interpreters of the constellations.
[Star Names, Their Lore and Meaning, Richard Hinckley Allen, 1889].
No myths or astrological interpretations are linked to these stars because Triangulum Australis was not visible to the ancients in the northern hemisphere.