≡ START First steps Deutsch Ellipsoid : Latitude dependent quantities

All geodetically relevant quantities for a specified latitude of arbitrary type on a chosen reference ellipsoid are computed.

Note

Ellipsoid of revolution	Airy 1830 Australian 1965 Bessel 1841 Bessel 1841 Namibia Clarke 1858 Clarke 1866 Clarke 1880 Clarke 1880 IGN Everest 1830 India Everest 1830 Malaysia Everest 1956 India Everest 1964 Malaysia Everest 1969 Malaysia Everest Pakistan Fisher 1960 GRS 80 Hayford Helmert 1906 Hough 1906 Indonesian 1974 International 1924 Krassovsky 1940 Modified Airy South American 1969WGS 72 WGS 84 Sphere (6371 km)	Unit of latitude	Degrees [-90...90] DegMinSec [-90...90] Radian [-π/2...π/2] Turns [-1/4...1/4]
Type of latitude	ellipsoidal φ geocentric ψ reduced β rectified μ	Value of latitude

meridian cross section

P	point on ellipsoid
P′	point on circumscribed sphere
O	geocentre
a	semimajor axis
b	semiminor axis
m	length of meridian arc
ρ	radius of parallel
N	radius of curvature in the prime vertical
φ	ellipsoidal latitude
ψ	geocentric latitude
β	reduced latitude
μ	rectified latitude

Did you know? The ellipsoidal normal is rectangular to the ellipsoid at point P