Path: Orbit/RHSOrbit
% Computes the right hand side for Earth gravity with J2. Uses a local version of AGravityC that explicitly uses only the J2 term. -------------------------------------------------------------------------- Form: d = RHSGeoJ2; % default data xDot = RHSGeoJ2( x, t, d, aExt ) -------------------------------------------------------------------------- ------ Inputs ------ x (6,1) Position vector [rECI (km); vECI (km)]; t (1,1) Time since start Julian Date (s) d (.) Gravity model struct .j2 (1,2) J2 term (unnormalized and positive) .mu (1,1) Spherical gravitational potential .a (1,1) Planet radius .jD0 (1,1) Start Julian Date aExt (3,1) External acceleration vector [x;y;z] ECI ------- Outputs ------- xDot (6,1) [rDot;vDot] -------------------------------------------------------------------------- See also: ECIToEF, RHSGeoHarm --------------------------------------------------------------------------
AerospaceUtils: Coord/ECIToEF Common: Time/JD2T
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