northern circumpolar constellations
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Northern Circumpolar Constellations. What does circumpolar mean?. to circle around the pole- or North Star. daily trace circles around the north celestial pole, without setting or dipping below the horizon. move in a counterclockwise direction.

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what does circumpolar mean
What does circumpolar mean?
  • to circle around the pole- or North Star.
  • daily trace circles around the north celestial pole, without setting or dipping below the horizon.
  • move in a counterclockwise direction.
  • On any given night, the constellation is visible during a portion of the circle; the rest is traced out when the constellation is hidden in the daylight sky.
circumpolar constellations
Circumpolar Constellations:
  • Ursa Major, the Big Bear (includes the Big Dipper)
  • Ursa Minor, the Little Bear
  • Cassiopeia, the Queen of Ethiopia
  • Cepheus, the King of Ethiopia
  • Draco the Dragon
what is it an asterism
What is it? An ASTERISM
  • The Big Dipper and Little Dipper are part of two other official constellations
  • The Great Bear and Little Bear respectively.
  • They are a familiar, but unofficial grouping of stars.
why is polaris so important
Why is Polaris so important?
  • it stays relatively fixed in the heavens while all of the other stars move in circular arcs throughout the night.
  • In the past, it has been called ‘the ship star’, ‘the leading star’, ‘star of the sea’ and the ‘steering star’
  • Native Americans called it the ‘nail of the sky’.
does precession effect the pole star yes
Does Precession effect the Pole Star? YES!!
  • The Earth is like a spinning top.
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