The diminishing availability of Earth’s resources has catalyzed the emergence of space mining as a burgeoning industry, with the recent success of missions like OSIRIS-REx underscoring the viability of extracting valuable materials from Near-Earth Asteroids (NEAs). This thesis presents an optimized trajectory framework for asteroid mining missions, focusing on minimizing propellant consumption for reaching these NEAs by means of an electric propulsion system and optimal control theory. The selection process begins with a comprehensive evaluation of potential asteroids, filtering those that are accessible through a Hohmann transfer with a $\Delta v$ requirement below a specified threshold. This criterion ensures the chosen asteroids have orbital parameters that closely align with the mission’s departure conditions, originating from the Sun-Earth Lagrange Point L2.