pint.orbital.kepler

Functions for working with Keplerian orbits

All times are in days, distances in light-seconds, and masses in solar masses.

Functions

btx_parameters(asini, pb, eps1, eps2, tasc)	Attempt to convert parameters from ELL1 to BTX.
eccentric_from_mean(e, mean_anomaly)	Compute the eccentric anomaly from the mean anomaly.
inverse_kepler_2d(xv, m, t)	Compute the Keplerian parameters for the osculating orbit.
inverse_kepler_3d(xyv, m, t)	Inverse Kepler one-body calculation.
inverse_kepler_two_body(total_state, t)
kepler_2d(params, t)	Position and velocity of a particle in a Kepler orbit.
kepler_3d(params, t)	One-body Kepler problem in 3D.
kepler_two_body(params, t)	Set up two bodies in a Keplerian orbit
mass(a, pb)	Compute the mass of a particle in a Kepler orbit.
mass_partials(a, pb)	Compute the mass of a particle in a Kepler orbit, with partials.
true_from_eccentric(e, eccentric_anomaly)	Compute the true anomaly from the eccentric anomaly.

Classes

Kepler2DParameters(a, pb, eps1, eps2, t0)	Parameters to describe a one-object 2D Keplerian orbit.
Kepler3DParameters(a, pb, eps1, eps2, i, lan, t0)	Parameters to describe a one-object 3D Keplerian orbit.
KeplerTwoBodyParameters(a, pb, eps1, eps2, ...)	Parameters to describe a one-object 3D Keplerian orbit.