It's a myth that the definition of a normal bowel movement is having 1 movement each day because that is not true for everyone. There is no rule for frequency of bowel movements, but the general range is from 3 times a day to 3 times a week.
We investigate the dependence of the stickiness parameters $t_{ij}=1/(12\tau _{ij})$ -- where the $\tau_{ij}$ are the conventional Baxter parameters -- on the solute diameters $\sigma_{i}$ and $\sigma_{j}$ in multicomponent sticky hard sphere (SHS) models for fluid mixtures of mesoscopic neutral particles.
Pluto may be tiny, but it did give New Horizons a kick in the pants... This is Pluto in a Minute. The sphere of influence is the area around a body in space in which anything inside that sphere is controlled more by that body's gravity than anything else. The gravity we feel on the Earth we express as 1g.