CL_op_rpvp2ae

Description

• Computes semi major axis and eccentricity from periapsis radius and velocity at periapsis (elliptic and hyperbolic orbits).

• Note:

  The results are correct even if (rp,vp) are data that actually correspond to the apoapsis.

Parameters

rp:

Periapsis radius [m] (1xN or 1x1)

vp:

Velocity at periapsis [m/s] (1xN or 1x1)

mu :

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

sma:

Semi major axis [m] (1xN)

ecc:

Eccentricity (1xN)

Authors

• CNES - DCT/SB

See also

• CL_op_rava2ae

• CL_op_rarp2ae

• CL_op_rpvinf2ae

Examples

// Elliptic orbit rp = 7078.e3; vp = 8.e3; [sma,ecc] = CL_op_rpvp2ae(rp,vp) // Hyperbolic orbit rp = 7078.e3; vp = 12.e3; [sma,ecc] = CL_op_rpvp2ae(rp,vp)