AstroGrav for Mac is a full-featured, high precision solar system simulator that calculates the gravitational interactions between all astronomical bodies, so that the motions of asteroids and comets are simulated much more accurately than with planetarium applications. The effects of general relativity and radiation pressure can be taken into account, and superb interactive 3D viewing allows you to easily rotate and zoom your view while the solar system evolves.
The AstroGrav software has a huge range of features and viewing options including:
Improved the evolution algorithm, import of asteroids and comets, handling of tables, and display of object histories. Added a new command that removes objects in such a way as to leave the orbits of other objects unchanged. Many performance improvements. Various minor bug fixes and improvements.
Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor, Mac OS X 10.7 minimum, 2 GB RAM