Symbol | Description | Units |
mass gravity constant of the geopotential model | m s | |
semi-major axis of the geopotential model | meters | |
mass gravity constant of the reference ellipsoid | m s | |
semi-major axis of the reference ellipsoid | meters | |
flattening parameter of the reference ellipsoid | no units | |
semi-minor axis of the reference ellipsoid | meters | |
linear eccentricity | meters | |
first (numerical) eccentricity | no units | |
second (numerical) eccentricity | no units | |
angular velocity of the Earth's rotation | s | |
longitude | or radians | |
geographic latitude | or radians | |
geocentric latitude | or radians | |
local elliptic radius | meters | |
mean gravity | ms | |
local normal gravity | ms | |
normal gravity at the equator, at the poles | ms | |
fully normalized spherical harmonic coefficients | no units | |
(or Stokes' coefficients) of the gravity model | no units | |
associated Legendre functions of the first kind | no units | |
fully normalized harmonics | no units |