Constellation Triangulum Australe
The constellation Triangulum Australe, also known as the Southern Triangle, is a small but distinctive constellation located in the southern sky. It was first described by Dutch navigators Pieter Dirkszoon Keyser and Frederick de Houtman in the late 16th century.
This constellation is named after the mythical southern triangle that represents an altar used for sacrifices. Triangulum Australe is situated next to other prominent constellations like Circinus, Norma, Apus, and Ara.
Key Facts about the Constellation Triangulum Australe:
1. Size and Position: Triangulum Australe is one of the smallest constellations, occupying an area of approximately 110 square degrees. It is located in the third quadrant of the southern hemisphere.
2. Brightest Star: The brightest star in Triangulum Australe is called Atria (Alpha Trianguli Australis), with a visual magnitude of 1.91.
3. Notable Features: The constellation lacks any Messier objects and does not contain any bright deep-sky objects. However, it is home to several binary stars and faint globular clusters.
4. Best Time to Observe: Triangulum Australe is visible to observers south of latitude 25 degrees north and remains best seen during the months of May to August.
References
https://www.constellation-guide.com/constellation-list/triangulum-australe-constellation/
https://en.wikipedia.org/wiki/Triangulum_Australe
https://www.space.com/16862-southern-triangle-triangulum-australe.html