Description

<p>In considering targets for human asteroid missions, there are several major factors that will make a significant difference in assessment of mission risks that can be addressed by simple photo-reconnaissance of a target. One of the most important of these factors is the spin state of the asteroid: does it rotate in a slow, easily predictable way? Asteroids that rotate very rapidly or that tumble about multiple axes present significant hazards in planning and executing proximity operations− especially operations that must be carried out over extended time periods.  Another consideration is the physical state of the asteroid itself: is it a coherent mass or does it consist of a gravitationally bound pile of much smaller pieces? A coherent structure is unlikely to rearrange its configuration in response to a push by an astronaut or a hardware deployment and will provide a much easier surface in which to plant anchors for astronaut mobility or to hold equipment to the surface than will a rubble pile.</p><p>The full success criteria entails flying by a near Earth asteroid and acquire images sufficient to determine the target volume, shape model, Asteroid spectral type and meteorite analogs, rotational properties (pole position, rotation period), orbit, debris/dust field in local environment, and regolith characteristics.</p><p>Meeting this requirement addresses the need to fill Strategic Knowledge Gaps (SKG’s) related to asteroids as a precursor to subsequent safe and successful human missions.  The data obtained will also support the advancement of science interests in asteroids.</p>

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• This data is described at

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