PDF document - Orbital and Celestial Mechanics Website

This next plot is a “zoomed” display of the first plot closer to the Earth. The initial park orbit isdisplayed in red, the transfer trajectory is blue, and an inertial, Earth-centered coordinate system is onthe plot. The x-axis of this system is red, the y-axis green and the z-axis blue. The location on the parkorbit at which TLI occurs is marked with a small dot symbol.0This plot illustrates the geocentric trajectory of the spacecraft in the vicinity of the moon. In thisdisplay, the location of the spacecraft when it enters the sphere-of-influence of the moon is marked witha blue asterisk. The spacecraft trajectory at closest approach to the moon is the small blue dot and thelocation of the moon at closest approach is the green asterisk.-10page 11