Here is a 3-body system with 3D graphics. I made it about 2 years ago but I’ve been updating it lately. This model works at about 30 frames/second in Excel 2003 on a modern PC. In Excel 2007 it will run 10-15 times slower. I know 2010 is a lot faster than 2007. I’ve just bought a legit copy for 50$ but I didn’t have a chance to install it yet. I need to add few more features. I am also thinking of adding a 3D gravitational surface map later (like space curvature in relativity). It would be a nice feature but it will take a little longer to finish.
After download click the “Demo” button and watch as the model goes through 13 different setups. Don’t forget to play with the perspective parameters (view. distance, azimuth, altitude) while it’s running. You can change the configuration (I have saved 13 different valid converging configurations which you can modify) but here you have to start and stop it with the “Run-Pause” button instead of the “Demo” button. And don’t forget to click “Load Config.” before you hit “Run-Pause” if you want to load another configuration than the current one.
You can create your own system by changing the initial conditions. You will see that some of your new configurations won’t converge but if you find one you like you can save it in positions 14 to 30 (these are empty right now) or you can even overwrite one of my initial conditions (1 to 13). Explore! If you mess up something just don’t save. Oh, and by the way I will be preparing a instruction list (user manual) for this model.
This file is complete and can be used “as is” which means unlike the previous version it doesn’t need to be “rebuilt”.