Name

CL_op_rava2ae — Apoapsis radius and velocity to semi major axis and eccentricity (elliptic orbits)

Calling Sequence

   [sma,ecc] = CL_op_rava2ae(ra,va[,mu])
   
   

Description

  • Computes keplerian parameters semi major axis and eccentricity from apoapsis radius and velocity (only elliptic orbit).
  • Last update : 20/2/2008

Parameters

ra:

apoapsis radius [m] (1xN)

va:

velocity at apoapsis [m/s] (1xN)

mu :

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

sma:

semi major axis [m] (1xN)

ecc:

eccentricity (1xN)

Authors

CNES - DCT/SB

Examples

ra = 7078.e3;
va = 7.e3;
[sma,ecc] = CL_op_rava2ae(ra,va)