boinor.constants.mean_elements
==============================

.. py:module:: boinor.constants.mean_elements

.. autoapi-nested-parse::

   @author: Dhruv Jain, Multi-Body Dynamics Research Group, Purdue University.

   This module complements constants defined in `astropy.constants` with
   mean distances between sun-planet and planet-moon systems

   Mean distances between the two bodies are required for CR3BP model CR3BP
   model's goal is to approximate the behavior of a satellite in an ephemeris
   model. Thus, it is reasonable to us low precision mean distances values as for
   more comprehensive mission designs, the CR3BP trajectories are differentially
   corrected in an ephemeris model with high precision mean distances.

   Low precision mean distance between sun-planet were obtained from:

   * NASA. (n.d.). Approximate positions of the planets. NASA., from
     https://ssd.jpl.nasa.gov/planets/approx_pos.html

   Low precision mean distance between planet-moon were obtained from:

   * NASA. (n.d.). Planetary satellite mean elements. NASA. from
     https://ssd.jpl.nasa.gov/sats/elem/sep.html

   All computed at J2000, except "Pluto - Charon" -> Epoch: 2020-01-01.5 TDB



Attributes
----------

.. autoapisummary::

   boinor.constants.mean_elements.mean_a_mercury
   boinor.constants.mean_elements.mean_a_venus
   boinor.constants.mean_elements.mean_a_earth
   boinor.constants.mean_elements.mean_a_mars
   boinor.constants.mean_elements.mean_a_jupiter
   boinor.constants.mean_elements.mean_a_saturn
   boinor.constants.mean_elements.mean_a_uranus
   boinor.constants.mean_elements.mean_a_neptune
   boinor.constants.mean_elements.mean_a_moon
   boinor.constants.mean_elements.mean_a_phobos
   boinor.constants.mean_elements.mean_a_deimos
   boinor.constants.mean_elements.mean_a_europa
   boinor.constants.mean_elements.mean_a_ganymede
   boinor.constants.mean_elements.mean_a_enceladus
   boinor.constants.mean_elements.mean_a_titan
   boinor.constants.mean_elements.mean_a_titania
   boinor.constants.mean_elements.mean_a_triton
   boinor.constants.mean_elements.mean_a_charon


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

.. py:data:: mean_a_mercury

.. py:data:: mean_a_venus

.. py:data:: mean_a_earth

.. py:data:: mean_a_mars

.. py:data:: mean_a_jupiter

.. py:data:: mean_a_saturn

.. py:data:: mean_a_uranus

.. py:data:: mean_a_neptune

.. py:data:: mean_a_moon

.. py:data:: mean_a_phobos

.. py:data:: mean_a_deimos

.. py:data:: mean_a_europa

.. py:data:: mean_a_ganymede

.. py:data:: mean_a_enceladus

.. py:data:: mean_a_titan

.. py:data:: mean_a_titania

.. py:data:: mean_a_triton

.. py:data:: mean_a_charon