A permanently-acting NEA damage mitigation technique via the Yarkovsky effect |
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Authors: | D C Hyland H A Altwaijry S Ge R Margulieux J Doyle J Sandberg B Young X Bai J Lopez N Satak |
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Institution: | 1.College of Engineering, College of Science,Texas A&M University,Austin,USA;2.King Abdulaziz City for Science and Technology,Riyadh,Saudi Arabia |
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Abstract: | In the later stages of a combined mission of exploration and damage mitigation of a hazardous Near Earth Asteroid (NEA), sufficiently
detailed tracking, orbit prediction, mass distribution, and physical properties data have been accumulated. It may be desirable
to implement a “slow push” damage mitigation technique that is capable of altering the NEA orbit continuously and permanently.
This possibility was suggested in a companion paper that outlined an archetypal exploration/mitigation mission to the NEA
99942 Apophis, which is achieved using a novel albedo change approach. The details and apparatus used in the albedo modification
technique are described in the paper. We describe the design details and the constraints on particle size (to prevent electrostatic
levitation and escape) and on the dispensing speed (to achieve the desired coverage zone and prevent particles from orbiting
or escaping). |
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