2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/181272We give a tracker solution for the quintessence scalar field for Ratra--Peebles or SUGRA potentials, holding before, during and after the equality epoch (ρ_m=ρ_r) and nicely fitting the numerical behavior.submitted to New AstronomyAstrophysicstext