Omega Scorpii

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There are two stars with the Bayer designation ω Scorpii (omega Scorpii):

They are separated by 0.24° on the sky, which is far enough apart to be individually resolved with the naked eye.[1] The two stars are not physically associated with each other,[2] and thus only form an optical pair. ω Scorpii also has the traditional name Jabhat al Akrab,[2] which is derived from the Arabic جبهة العقرب jabhat[u] al-caqrab meaning "[The] forehead of the scorpion". For the Chinese, the pair were known as Kow Kin, meaning a Hook and Latch.[3]


  1. ^ Ferreira, Lucas (June 2009), "Double Stars in Scorpius", Monthly Notes of the Astronomical Society of South Africa, 68 (5 and 6): 119–122, Bibcode:2009MNSSA..68..119F. 
  2. ^ a b Inglis, Mike, ed. (2015), Patrick Moore’s Observer’s Year: 366 Nights of the Universe: 2015 – 2020, The Patrick Moore Practical Astronomy Series (3rd ed.), Springer, p. 184, ISBN 3319186787. 
  3. ^ Allen, Richard Hinckley (1899), Star-names and Their Meanings, G.E. Stechert, p. 372.