Circinus

Tuesday 19 September 2017 - 08:13:12 Posted by  Bobby
circinus2

 Description of Circinus

This small constellation next to Centaurus was introduced in the 18th century by the French astronomer Nicolas Louis de Lacaille. It represents a pair of dividing compasses, of the type used by surveyers and chart makers, and is sutably placed in the sky next to Norma, the level. Despite its insignificance, Circinus is easy to find, since it lies next to Alpha Centauri in Centaurus. Although it is in the Milky Way, it contains no notable star clusters.

 The Facts

  • Depiction: The Compasses
  • Pronounced: SIR-sin-us
  • Genitive: Circini
  • Abbreviation: Cir
  • Highest in the Sky: May to June
  • Size Ranking: 85th
  • Coverage Area: 93 Sq. Degrees
  • Right Acension: 15 hours
  • Declination: -60°
  • Visibility: 21°N to 90°S

 Notable Objects

  • ESO 97 - G13: Circinus Galaxy
  • NGC 5315: Planetary nebula
  • NGC 5822: Open cluster
  • NGC 5823: Open cluster

 Best Viewed Objects/Stars

Alpha Circini

 A double star. The primary, of magnitude 3.2, is the brightest star in the constellation. It lies 53 light-years away. Its companion, of magnitude 8.6, is visible through a small telescope.
Circinus
circinus

 Where to?

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