High Fidelity Modeling of SRP and Its Effect on the Relative Motion of Starshade and WFIRST

Farres, Ariadna ; Webster, Cassandra ; Folta, Dave

关键词: GEOMETRIC ACCURACY;    STELLAR MODELS;    SOLAR RADIATION PRESSURE;    ROTATION;    TRAJECTORIES;    LIBRATION;    WIDE-FIELD INFRARED SURVEY TELESCOPE (WFIRST);    TRANSFER ORBITS;    PLANET DETECTION;    FORMATION FLYING;    STATIONKEEPING;    GEOMETRIC RECTIFICATION (IMAGERY);    THREE BODY PROBLEM;    TRACKING (POSITION);    ORBIT DETERMINATION;    INFRARED TELESCOPES;   

RP-ID  :  GSFC-E-DAA-TN49849

学科分类：天文学(综合)

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

In this paper we perform a detailed analysis of how Solar Radiation Pressure (SRP) affects the relative motion of two spacecrafts, the Wide-Field Infrared Survey Telescope (WFIRST) and Starshade, orbiting in the vicinity of the Sun-Earth L2. While WFIRST orbits about its own Libration Point Orbit (LPO), Starshade will fly a specific trajectory to align with WFIRST and observe a Design Reference Mission of pre-determined target stars. In this analysis, we focus on the transfer orbit for Starshade from one observation to the other. We will describe how SRP affects the dynamics of the Starshade relative to WFIRSTand how relevant this effect is in order to get an accurate estimate of the total difference in velocity (delta v).