Rigit bodies on orbit?

Hi, maybe anyone knows how to create similar particles movement to this https://www.youtube.com/watch?v=r8soMU5cKYE (0-10sec.)? I tried to do it with particles and Curve Guide, but particles don’t interact with each other and I can’t make them to do “second lap”, so I would love to recreate it with rigid bodies… Just don’t know which force field could do that…