ssapy_toolkit.Orbital_Mechanics.equally_spaced_ta

ssapy_toolkit.Orbital_Mechanics.equally_spaced_ta(n_samples, orbit=None, a=None, e=None, rp=None, ra=None, n_dense=20000, degrees=False)[source]

Compute true anomalies (ta) for points approximately equally spaced by arc length around an elliptical orbit.

Accepts either:

  • orbit : SSAPy Orbit object

  • a and e

  • rp and ra (periapsis and apoapsis radii)

Constraints:

  • n_samples must be even

  • if n_samples >= 2, 0 and pi are always included

Parameters:

  • n_samples (int) – Number of samples to return. Must be even.

  • orbit (ssapy.Orbit, optional) – SSAPy Orbit object.

  • a (float, optional) – Semi-major axis.

  • e (float, optional) – Eccentricity.

  • rp (float, optional) – Periapsis radius.

  • ra (float, optional) – Apoapsis radius.

  • n_dense (int, optional) – Number of dense samples used internally.

  • degrees (bool, optional) – If True, return degrees. Otherwise radians.

Returns:

ta – True anomalies, either in radians or degrees.

Return type:

ndarray