Assessing Collision Probability in Low-Thrust Deorbit

End-of-life support of satellites is necessary to improve post-mission-disposal compliance rates for maintaining space environment. Deorbit mission with low thrust, e.g. a laser, induces low-level deceleration on the target object that gradually lowers altitude. Since such low-thrust trajectory time-consuming, risk collision greatly influences success rate. In this context, paper assesses during deorbit trajectories thrust. Furthermore, parametric studies relationship between re-entry time and are performed.