title: Omicron2 Centauri
text: # Omicron2 Centauri
  
  $Omicron^2$ Centauri $(ο^2$ Cen, $ο^2$ Centauri) is a star in the constellation Centaurus.
  
  $ο^2$ Centauri is a white A-type supergiant with a mean apparent magnitude of +5.12. It is approximately 7,000 light years from Earth. It is classified as an Alpha Cygni type variable star and its brightness varies from magnitude +5.12 to +5.22 with a period of 46.3 days.
  
  In 1996, Kaufer and colleagues calculated $Omicron^2$ Centauri to be around 136,000 times as luminous, 18 times as massive and have 131 times the diameter of the Sun.
  
  $ο^2$ Cen forms a close naked eye pair with $ο^1$ Cen, another 5th magnitude supergiant.
  
  