The name of particles orbiting around a central part depends on the context. Here are a few possibilities:

* In atoms: The particles orbiting the nucleus are called electrons.

* In planetary systems: The particles orbiting a star are called planets.

* In galaxies: The particles orbiting the galactic center are called stars and gas clouds.

* In general: You could use the more general term satellites or orbiting bodies.

If you can provide more context about what you're asking, I can give you a more specific answer!