Spacecraft formation and cluster flight control have seen growing interest in the last decade. However, the problem of finding the optimal debris collision avoidance maneuver for a member of a cluster has received little attention. Our work explores novel optimization methods supporting the calculation of a debris evasive maneuver for a satellite which is a member of a cluster. These include an improvement to the calculation of Time of Closest Approach (TCA), a new method for calculating the maximum distance between orbiting objects and improvements to the calculation of optimal debris avoidance maneuvers.