• Deneb

  Deneb is a star in Cygnus.

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  Type            White supergiant
  Constellation   Cygnus
  Magnitude       1.2
  Spectral type   A2Ia
  Distance        about 3,229 light years
  Double star     components 75.4″ apart
  You need        naked eye from a dark sky

  Known as
  Bayer           α Cyg
  Yale            HR 7924

  Physical
  Radius          about 200 times the Sun

  More information about Deneb

  Deneb is faint compared to Sirius, but vastly brighter in reality:
  somewhere around 200,000 times the Sun's output, seen from a distance of
  approximately 2,600 light years. If it sat where Sirius does it would
  cast shadows at noon. Its name (the tail) is the most productive root in
  the sky. The same word gives Denebola, the lion's tail, Deneb Algedi,
  the goat's tail, and Deneb Kaitos, the sea monster's tail.

  Etymology
  From        Arabic
  Reading     dhanab  ·  ذنب
  Literally   tail

  Bayer lettered the stars of each constellation in his Uranometria of
  1603, in order of brightness. He was working from Tycho's magnitudes by
  eye, and the order he recorded is often wrong.

  First published in 1930 by Yale astronomer Frank Schlesinger, and
  maintained since, the Yale Bright Star Catalogue lists every star down
  to magnitude 6.5. It contains 9,110 stars.

  where it is tonight:  skymap.sh/Deneb