# poliastro.threebody.flybys¶

## Module Contents¶

### Functions¶

 compute_flyby(v_spacecraft, v_body, k, r_p, theta=0 * u.deg) Computes outbound velocity after a flyby.
poliastro.threebody.flybys.compute_flyby(v_spacecraft, v_body, k, r_p, theta=0 * u.deg)

Computes outbound velocity after a flyby.

Parameters
• v_spacecraft () – Velocity of the spacecraft, relative to the attractor of the body.

• v_body () – Velocity of the body, relative to its attractor.

• k () – Standard gravitational parameter of the body.

• r_p () – Radius of periapsis, measured from the center of the body.

• theta (, optional) – Aim angle of the B vector, default to 0.

Returns

• v_spacecraft_out (~astropy.units.Quantity) – Outbound velocity of the spacecraft.

• delta (~astropy.units.Quantity) – Turn angle.