Download algorithm: orbit-gravity-sim-12.exe:

This software has been tested on:
Windows XP, Windows 7, and Windows 10
This compiled application is entirely free to distribute as the user sees fit.

If your PC is set to use the comma as a decimal separator,
then this app won't work so good.

Publish date: 13 March 2018 AD
Author: Jonathan Ainsley Bain, Port Elizabeth, South Africa

facebook.com/jonathan.a.bain
.