A huge orange star, nearly 400 light years from the Solar System. It is the brightest
star in the constellation of the Southern Triangle.
Its name Atria is presumably derived from a contraction of its Bayer desigation:
Alpha Trianguli Australis.
Atria is a highly luminous body, though as an orange, K-type, star its surface
temperature is a little lower than that of the Sun. There are indications of strong
flare activity on its surface, and a small and faint binary companion has recently been
Its high intrinsic luminosity means that Atria shines brightly in Earth's sky: a magnitude
of +1.9 makes it the thirty-second brightest star, and considerably more prominent
than its counterpart in the Northern Triangle, Mothallah.