Tuesday 19 September 2017 - 21:10:39 Posted by  Bobby

 Invention of Musca

Musca lies in the Milky Way, to the south of Centaurus and Crux. It depicts a fly and is one of the dozen southern cponstellations invented in the 16th century by the Dutch navigators Pieter Dirkszoon Keyser and Frederick de Houtman. Its brightest star is Alpha Muscae, magnitude 2.7.

 The Facts

  • Depiction: The Fly
  • Pronounced: MUSS-kah
  • Genitive: Muscae
  • Abbreviation: Mus
  • Highest in the Sky: April to May
  • Size Ranking: 77th
  • Coverage Area: 138 Sq. Degrees
  • Right Acension: 12 hours
  • Declination: -70°
  • Visibility: 13°N to 90°S

 Notable Objects

  • Beta Muscae: Binary star
  • IC 4191: Planetary nebula
  • MyCn18: Planetary nebula
  • NGC 4372: Globular cluster
  • NGC 4833: Globular cluster
  • NGC 5189: Planetary nebula

 Best Viewed Objects/Stars

Beta Muscae

 A close binary that appears through a small telescope as a single star of magnitude 3.0. An aperture of around 4 in (100 mm) will divide it into two stars if magnitudes 3.6 and 4.1 that orbit each other every 400 years or so.

Theta Muscae

 A double star. The two components of magnitudes 5.6 and 7.6 are divisible with a small telescope. The brighter star is a luminous blue supergiant, while its companion is an example of a Wolf-Rayet star, a hot star that has lost its outer layers.


 Where to?

Back To List 

Up Next- Norma 



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