pint.orbital.kepler.kepler_two_body

pint.orbital.kepler.kepler_two_body(params, t)

Set up two bodies in a Keplerian orbit

Most orbital parameters describe the orbit of the primary; the secondary’s parameters are inferred from the fact that its mass is q times that of the primary. x_cm and v_cm are the position and velocity of the center of mass of the system.

The system is observed at time t, and tasc is the the time of the ascending node.

Includes derivatives.