Might gravitational potential, instead of inversely dropping off, have a different (exponential like?) tapering off? Differing, electric field, and also radioactivity, appears to suddenly drop off? Thus is there precedence for differences in decreasing field strength, and decrease in other phenomena?
Might such rendering be consistent with the continued apparent gravitational binding of Proxima centauri in it’s triple star system, even though seeming through calculations, being too far away from other 2 stars? Likewise is gravitational potential seemingly too weak, via calculations, to keep our moon in orbit? Hence might our gravitational potential have a different gradual tapering off, not reflected in our calculations or modeling?
Thus rather than inversely dropping off, there would seem to be tapering of such potential far out; for example the Oort cloud, and Proxima centauri with a period of ~500,000 years, consistent with ~15,000 AU distance to alpha centauri; all part of a triple system. And perhaps even further outward – a neutrino belt?
Might more accurate modeling of such potential involve expansion as a series, with just inverse fall off as the zero term? Again tailoring such expansion series to suit any empirical findings, such as above?
Is Proxima centauri’s distant from it’s binary companions at approximately that of Oort cloud? Based on above, it would seem closer in when compared to Oort cloud estimates. Yet might there be the possibility of a large mass nearer to Oort cloud distance?
The Oort cloud is assumed to be comprised of just cometary mass scale. However the potential and curvature at such distant would not be influenced by the mass of objects at such distance. Hence could one have an undetected gas giant (historically related to Uranus’ tilted axis?) at such distance, and even a red dwarf, say .08 solar mass; neither one apparently affecting the rest of our stellar system? Or might long period comets we detect, be the result of (and consistent with) destabilzation by a gas giant or red dwarf nearer to Oort cloud?
A red dwarf mass could be detected in the infrared, including infrared spectroscopy. An invisible gas giant might only be detected by occultation of a background star(s).