A permanently-acting NEA damage mitigation technique via the Yarkovsky effect

Details A permanently-acting NEA damage mitigation technique via the Yarkovsky effect A permanently-acting NEA damage mitigation technique via the Yarkovsky effect

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010cosre..48..430h&link_type=abstract

Cosmic Research, Volume 48, Issue 5, pp.430-436

Physics

Scientific paper

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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