Geodetic Longitude

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Geodetic Longitude

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The angle between the plane of the reference meridian and the plane through the polar axis and the normal to the spheroid. It is the astronomical longitude corrected for the prime vertical component of the deflection of the vertical divided by the cosine of the latitude. Also called geographic longitude. </dd>
This is the longitude used for charts. </dd>

References

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