Accession Number : AD0776022

Title :   Doubly Averaged Effect of the Moon and Sun on a High Altitude Earth Satellite Orbit.

Descriptive Note : Technical note,

Corporate Author : MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s) : Ash,Michael E.

Report Date : 01 MAR 1974

Pagination or Media Count : 108

Abstract : The secular effect of the moon or sun on a high altitude earth satellite orbit is approximated by spreading the moon or sun into a circular ring of matter and averaging over one orbit of the satellite. Calculations are performed to first order in eccentricity for satellite radii inside and outside the lunar radius. The secular variations in semi-major axis and inclination to the ring plane are zero and those of the other orbital elements are given by infinite series. (Modified author abstract)

Descriptors :   *High orbit trajectories, *Perturbations, Sun, Moon, Equations of motion, Partial differential equations, Numerical integration

Subject Categories : Spacecraft Trajectories and Reentry

Distribution Statement : APPROVED FOR PUBLIC RELEASE