$LastChangedDate: 27-Juil-2011 $

# CL_oe_kep2car

Keplerian to cartesian orbital elements

## Calling Sequence

       [pos_car,vel_car[,jacob]] = CL_oe_kep2car(kep[,mu])

## Description

- Converts classical keplerian orbital elements to position and velocity for an elliptic, hyperbolic or parabolic orbit.

  The transformation jacobian is optionally computed.

  See Orbital elements for more details

## Parameters

kep:

  classical keplerian parameters [sma;ecc;inc;pom;raan;anm] [m,rad] (6xN)

mu :

  (optional) gravitational constant. [m^3/s^2] (default value is %CL_mu)

pos_car:

  position [X;Y;Z] [m] (3xN)

vel_car:

  velocity [Vx;Vy;Vz] [m/s] (3xN)

jacob:

  (optional) transformation jacobian d(X,Y,Z,Vx,Vy,Vz)/d(sma,ecc,inc,pom,raan,anm) (6x6xN)

## Bibliography

- 1) CNES - MSLIB FORTRAN 90, Volume V (mv_kep_car)

## See also

- CL_oe_car2kep

- CL_oe_kep2cirEqua

## Authors

- CNES - DCT/SB

## Examples

    // Example 1
    kep=[24464560,0.7311,0.122138,3.10686,1.00681,0.048363]';
    [pos_car,vel_car]=CL_oe_kep2car(kep);
    [kep2]=CL_oe_car2kep(pos_car,vel_car);