Other
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.1305e&link_type=abstract
American Astronomical Society, DPS meeting #42, #13.05; Bulletin of the American Astronomical Society, Vol. 42, p.1053
Other
Scientific paper
Missions to near-Earth asteroids (NEOs) are key destinations in NASA's new "Flexible Path" approach. NEOs are also of interest for science, for the hazards the post, and for their resources. We examine the selection criteria for target NEOs for human exploration to define a set of "Potentially Visitable Objects" (PVOs). Ultra-low delta-v from LEO to NEO rendezvous is the primary criterion, as this choice doubles the payload to NEO. Choices for NEOs as human destinations are currently very limited. Only 5 of the 6699 known NEOs have delta-v <4km/s, 2/3 of typical LEO-NEO delta-v. Even these are small and hard to recover. Other criteria - long launch windows, a robust abort capability, and a safe environment for proximity operations - will further limit the list of PVOs. Potentially there are at least an order of magnitude more PVOs but, to find them all on a short enough timescale (before 2025) requires a dedicated survey in the optical or mid-IR, optimally from a Venus-like orbit because of the short synodic period for NEOs in that orbit, plus long arc determination of their orbits.
Binzel Richard P.
Elvis Martin
Hoffman Jason
McDowell Jonathan C.
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