Statistics – Computation
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980asdy.conf..575g&link_type=abstract
In: Astrodynamics 1979; Proceedings of the Conference, Provincetown, Mass., June 25-27, 1979. Part 2. (A80-24710 08-13) San Dieg
Statistics
Computation
Geosynchronous Orbits, Orbit Decay, Orbital Mechanics, Transfer Orbits, Orbit Calculation, Orbit Perturbation, Perigees
Scientific paper
The study concerns the orbit lifetimes of spent upper stages that are used to boost NASA Space Transportation System payloads into geosynchronous transfer orbits. A semi-analytical method of trajectory computation was developed and applied to these particular orbits. It was found that gravitational perturbations of the sun, moon and oblate earth cause large changes in the perigee altitude. The following parameters have a strong influence on orbit lifetimes: Time of year of launch; Inertial orientation of orbital plane; Inclination of orbital plane.
Graf F. Jr. O.
Mueller Cord A.
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