Triangulum Australe

Tuesday 19 September 2017 - 21:59:51 Posted by  Bobby
triangulumaustrale2

 Invention of Triangulum Australe

Triangulum Australe lies in the Milky Way near Alpha and Beta Centauri and is the southern counterpart of the northern triangle, Triangulum. Although smaller than Triangulum, it is more prominent because its main stars are brighter. It is the smallest of the 12 constellations introduced at the end of the 16th century by the Dutch navigators Pieter Dirkszoon Keyser and Frederick de Houtman. Its brightest star is Alpha Trianguli Australis, magnitude 1.9.

 The Facts

  • Depiction: The Southern Triangle
  • Pronounced: tri-ANG-you-lum oss-TRAH-lee
  • Genitive: Trianguli Australe
  • Abbreviation: TrA
  • Highest in the Sky: June to July
  • Size Ranking: 83rd
  • Coverage Area: 110 Sq. Degrees
  • Right Acension: 16 hours
  • Declination: -65°
  • Visibility: 16°N to 90°S

 Notable Objects

  • NGC 5844: Planetary nebula
  • NGC 5979: Planetary nebula
  • NGC 6025: Open cluster

 Best Viewed Objects/Stars

NGC 6025

 An open cluster in the Milky Way, about one-third apparent width of the full Moon and easy to see with binoculars or a small telescope, its brightest star being of 7th magnitude. It lies 2,500 light-years away.
Triangulum Australe
triangulumaustrale

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