Computer Science
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997mst...........p&link_type=abstract
Masters Thesis, AD-A342946
Computer Science
3
Collision Avoidance, Warning Systems, Impact Prediction, Asteroid Collisions, Cometary Collisions, Orbit Perturbation, Earth Orbits, Approximation, Rendezvous Trajectories, Gravitational Fields, Circular Orbits, Orbital Mechanics
Scientific paper
The threat of collision between an asteroid or a comet and the Earth has been well documented. Mitigation of such a threat can be accomplished by destruction of the threat or by perturbing the threat object into a safe orbit. Following a summary of proposed mitigation techniques, this thesis investigates the impulse required to safely perturb a threatening Earth Crossing Asteroid (ECA). While previously published analysis included only two body approximations to the impact geometry, this thesis adds the effect of the Earth's gravitational field to more closely approximate reality. The results indicate that third body effects are strongest on ECA's in a nearly circular heliocentric orbit, where the minimum required delta V can be several times larger than that calculated using two body approximations. To determine the minimum delta V required for mitigation, MATLAB.
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