2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/121523Recently, Brownstein and Moffat proposed a gravitational mechanism to explain the Pioneer anomaly based on their scalar-tensor-vector (STVG) metric theory of gravity. In this paper we show that their model, fitted to the presently available data for the anomalous Pioneer 10/11 acceleration, is in contrast with the latest determinations of the perihelion extra-rates of Jupiter, Saturn and Uranus.Latex2e, 10 pages, 2 tables, 1 figure, 16 references. Other typos fixed. Conclusions unchangedGeneral Relativity and Quantum CosmologyAstrophysicsHigh Energy Physics - PhenomenologySpace Physicstext