Physics – Optics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dps....41.1635n&link_type=abstract
American Astronomical Society, DPS meeting #41, #16.35
Physics
Optics
Scientific paper
The population of near-Earth objects is extremely diverse, compositionally, texturally and structurally. As a result, Earth-based reconnaissance is needed to guide spacecraft exploration. Study of the textural and structural properties of asteroids requires imaging and shape determination. Ground-based imaging can be done crudely using lightcurve inversion, and in detail using direct imaging (with adaptive optics), optical interferometry, and radar techniques. Of these, ground-based radar routinely provides imaging of near-Earth objects at 10-m class resolution and imaging of main-belt asteroids at 1-km class resolution. The optical techniques are unlikely to achieve this precision (less than 1 milliarcsecond) in the next decade, but should be developed, as they would not have the inverse-fourth-power SNR dependence characteristic of radar observations.
NEO Imaging White Paper Team
Nolan Michael C.
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