Definition of lunar distance in English:

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lunar distance

noun

The angular distance of the moon from the sun, a planet, or a star, used in finding longitude at sea.
Example sentences
  • During his editorship, Lalande added accurate tables of lunar distances from stars which were valuable in navigation.
  • For some years he had maintained a strong interest in, and advocacy of, the method of lunar distances for determining longitude.
  • Not by accident, he used Harrison's chronometer and lunar distances to calculate longitudes accurately.
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