Thank you for that prompting: what I am looking at, is the total gravity as expressed by the areas in origin,s graph. There is more "total" 0utside gravity at 2R than in the whole interior., and the rest to infinity is gravy. and how about those open and ellipticals? What do you mean?. -- As I understand it, these globulars, clusters and ellipticals have no common rotation,, no central bulge, perhaps no center black hole. yet the members can not just hang there, so they must have orbital velocities that reflect the gravity at their position in their particular orbits. At Inner orbit positions velocities should be low, in the periphery the speeds should be high. ergo, ; a situation opposite what Kepler's law predict for the central mass Solar system observations. so: for these old and loose conglomerations, there should be an anti Kepler law in force. (no farce).