ploonetide.odes.planet_moon.solution_planet_moon

ploonetide.odes.planet_moon.solution_planet_moon(t, y, integrator_args, initial_conds)[source]

Coupled ODE system for the star–planet–moon tidal problem.

Parameters:

  • t (float) – time vector

  • y (list) – variables vector

  • integrator_args (TYPE) – Description

  • initial_conds (TYPE) – Description

Examples

Circular state vector
y[0] = op
y[1] = npp
y[2] = log(nm)
Eccentric state vector

y[3] = hm = em**2

Obliquity-only state vector:

y[3] = psim

Eccentric + obliquity state vector:
y[3] = hm = em**2
y[4] = psim

The returned vector always matches len(y). The eccentric component is dhm/dt rather than dem/dt.

Returns:

planet-moon solutions vector

Return type:

list

Raises: