altitude curve

altitude curve

[′al·tə‚tüd ‚kərv]
(engineering)
The arc of a vertical circle between the horizon and a point on the celestial sphere, measured upward from the horizon.
(navigation)
A graphical representation of the altitude of a celestial body as it would appear from a single assumed position or a series of assumed positions over a period of time; such curves are precomputed.
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