Trajectory Design for the Wide Field Infrared Survey Telescope Mission

The Wide Field Infrared Survey Telescope (WFIRST) is an upcoming NASA-led observatory that will complete wide-field imaging and near-infrared sky surveys from a spacecraft in the Sun-Earth L-2 region. To identify a feasible mission trajectory-subject to geometric and maneuver constraints-an interactive trajectory design procedure, supported by dynamical systems techniques and early incorporation of the mission constraints, is developed. This rapid and informed approach is implemented as a module of Purdue University's Adaptive Trajectory Design tool. In this paper, a feasible mission trajectory is constructed and output to a higher-fidelity modeling environment. Furthermore, station-keeping maneuvers are computed using a stable mode analysis strategy.