boinor.iod.izzo
===============

.. py:module:: boinor.iod.izzo

.. autoapi-nested-parse::

   Izzo's algorithm for Lambert's problem.



Attributes
----------

.. autoapisummary::

   boinor.iod.izzo.kms


Functions
---------

.. autoapisummary::

   boinor.iod.izzo.lambert


Module Contents
---------------

.. py:data:: kms

.. py:function:: lambert(k, r0, r, tof, M=0, prograde=True, lowpath=True, numiter=35, rtol=1e-08)

   Solves the Lambert problem using the Izzo algorithm.

   .. versionadded:: 0.5.0

   :param k: Gravitational constant of main attractor (km^3 / s^2).
   :type k: ~astropy.units.Quantity
   :param r0: Initial position (km).
   :type r0: ~astropy.units.Quantity
   :param r: Final position (km).
   :type r: ~astropy.units.Quantity
   :param tof: Time of flight (s).
   :type tof: ~astropy.units.Quantity
   :param M: Number of full revolutions, default to 0.
   :type M: int, optional
   :param prograde: Controls the desired inclination of the transfer orbit.
   :type prograde: boolean
   :param lowpath: If `True` or `False`, gets the transfer orbit whose vacant focus is
                   below or above the chord line, respectively.
   :type lowpath: boolean
   :param numiter: Maximum number of iterations, default to 35.
   :type numiter: int, optional
   :param rtol: Relative tolerance of the algorithm, default to 1e-8.
   :type rtol: float, optional

   :returns: **v0, v** -- Pair of velocity solutions.
   :rtype: tuple