Latitude

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Latitude

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Angular distance from a primary great circle or plane. See coordinate, table. </dd>
Terrestrial latitude is angular distance from the equator, measured northward or southward through 90 degrees and labeled N or S to indicate the direction of measurement; astronomical latitude is angular distance between the direction of gravity and the plane of the equator; geodetic or topographical latitude is angular distance between the plane of the equator and a normal to the spheroid; geocentric latitude is the angle between a line to the center of the earth and the plane of the equator. Geodetic and sometimes astronomical latitude are also called geographic latitude. Geodetic latitude is used for charts. Assumed latitude is the latitude at which an observer is assumed to be located for an observation or computation. Fictitious latitude is angular distance from a fictitious equator. Grid latitude in angular distance from a grid equator. Transverse or inverse latitude is angular distance from a transverse equator. Oblique latitude is angular distance from an oblique equator. Difference of latitude is the shorter arc of any meridian between the paralles of two places, expressed in angular measure. Magnetic latitude, magnetic inclination, or magnetic dip is angular distance between the horizontal and the direction of a line of force of the earth's magnetic field at any point. Geomagnetic latitude is angular distance from geomagnetic equator. A parallel of latitude is a circle (or approximation of a circle) of the earth, parallel to the equator, and connecting points of equal latitude; or a circle of the celestial sphere, parallel to the ecliptic. Celestial latitude is angular distance north or south of the ecliptic. Galactic latitude is angular distance North or south of the galactic equator. See variation of latitude. </dd>

References

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