Angular Distance

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Angular Distance

1. The angular difference between two directions, numerically equal to the angle between two lines extending in the given directions.

2. The arc of the great circle joining two points, expressed in angular units.
3. Distance between two points, expressed in wave lengths at a specified frequency.
It is equal to the number of waves between the points multiplied by <math>2\pi</math> if expressed in radians, or multiplied by 360° if measured in degrees.

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use