Please try: SolarSystem.cdf
It is a Mathematica 11/12 Computable Document Format (CDF) web interactive app that has been purpose built for visualizing Solar System Orbital Mechanics
It requires local installation of the free Mathematica CDF plugin.
This now includes the 1998 OR2 “Planet Killer” that will pass very near Earth in April 2020 (when selecting the Asteroid vs. Comet).
Now with improved UI, better planet scaling, and Anaglyph viz.