It's okay once you understand what it's doing. It's showing the asteroid's movement in relation to Earth - from a vantage point mostly fixed relative to Earth.

It's okay once you understand what it's doing. It's showing the asteroid's movement in relation to Earth - from a vantage point mostly fixed relative to Earth. The viewpoint sweeps above and below Earth's orbit to give you some idea of what the asteroid is doing in three dimensions. It is not showing the asteroid's path around the Sun and isn't trying to. The asteroid's path relative to Earth is actually more relevant, for us to calculate how to observe it and to project any possible collision.