Navigational Triangle
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Navigational Triangle
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The spherical triangle solved in computing altitude and
azimuth. See
celestial
triangle.
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The celestial triangle is formed on the celestial sphere by the great
circles connecting the elevated pole, zenith of the assumed position of the
observer, and a celestial body. The terrestrial triangle is formed on the
earth by the great circles connecting the pole and two places on the earth.
The term astronomical triangle applies to either the celestial or terrestrial
triangle used for solving celestial observations.
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This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
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