Eckstein Hechler orbit propagation analytical model (mean elements)
[mean_cir] = CL_ex_meanEckHech(osc_cir [,er,mu,zonals])
Computes the mean orbital elements mean_cir from the osculating elements osc_cir
The orbital elements are the following:
Warnings :
- This function does not work for inclinations close to the critical inclinations (63.43494882 deg and 116.5650512 deg)
- This function nominally works for eccentricities smaller than 5.e-3
- This function works with a lesser accuracy for eccentricities between 5.e-3 and 0.1
- This function does not work for eccentricities greater than 0.1
Osculating circular-adapted elements [sma;ex;ey;inc;raan;pom+anm] (6xN)
(optional) Equatorial radius [m] (default is %CL_eqRad)
(optional) Gravitational constant [m^3/s^2] (default value is %CL_mu)
(optional) Vector of zonals coefficients J1 to Jn (troncated to J6) to be used (default is %CL_j1jn(1:6)) (Nz x 1)
Mean circular-adapted elements [sma;ex;ey;inc;raan;pom+anm] (6xN)
CNES - DCT/SB
1) CNES - MSLIB FORTRAN 90, Volume E (me_eck_hech)