Try different "acceleration" and "color change." See two orbiters, like a red and green planet, with a line drawn between them. Spacebar to erase.
See the faster "Orbiters Cardioid". This one here is a slower version. The speed of the orbits is slightly different, changes with "acceleration." Often a heart shaped cardioid pattern forms. Based on my several planetary orbit projects, which are better because based on real orbits in our solar system. This one isn't meant to be real planets because both are in the same orbit space, same radius.