Particle system emission space problem

I have a particle system that rotates around point A dropping particles with no velocity. This creates the effect of drawing a circle around point A as it moves through the rotaion. To do this I have to emit the particles in to world space.


If point A is moving, this creates the problem of the particles being 'fragged' away from point A (since they are emitted to world spsace) If I change to local space the particles all just sit under the emitter (since they have no speed), and don't create the circle around point A .


Is there a better technique I can use to create the particle circle spinning around point A, while following point A as it moves?