Percival’s Planet tracks four separate storylines — the idea being that these several characters’ orbits interact and interfere with one another in the way that planets influence one another gravitationally.

Nice idea.  A headache to get even halfway right.  I’ve included below the first page of a five-page outline that I stuck beside my computer — this after about the fourth draft or so.  Some of what’s mentioned here remains in the novel, but much is changed.