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CelestLab >> Orbit properties > CL_op_rarp2ae

CL_op_rarp2ae

Apoapsis radius and periapsis radius to semi major axis and eccentricity (elliptic orbits)

Calling Sequence

[sma,ecc] = CL_op_rarp2ae(ra,rp)

Description

Computes semi major axis and eccentricity from apoapsis radius and periapsis radius (elliptic orbits only).
Note:

CL_op_rarp2ae(rp,ra) is the same as: CL_op_rarp2ae(ra,rp)

Parameters

ra:: Apoapsis radius [m] (1xN or 1x1)
rp:: Periapsis radius [m] (1xN or 1x1)
sma:: Semi major axis [m] (1xN)
ecc:: Eccentricity (1xN)

Authors

CNES - DCT/SB

See also

Examples

ra = 7178.e3;
rp = 7078.e3;
[sma,ecc] = CL_op_rarp2ae(ra,rp)

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