2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/174809It has been recently demonstrated that the orbital velocity profile around Kerr black holes in the equatorial plane as observed in the locally non-rotating frame exhibits a non-monotonic radial behaviour. We show here that this unexpected minimum-maximum feature of the orbital velocity remains if the Kerr vacuum is generalized to the Kerr-de Sitter or Kerr-anti-de Sitter metric. This is a new general relativity effect in Kerr spacetimes with non-vanishing cosmological constant. Assuming that the profile of the orbital velocity is known, this effect constrains the spacetime parameters.9 pages, 4 figures, accepted for Class. Quant. GravGeneral Relativity and Quantum CosmologyAstrophysicstext