Planetary scientists from the Massachusetts Institute of Technology have developed a method for mapping
The scientists used computer simulations,to understand how asteroids behave during closest approach to larger objects. It turned out that the shape and size of a space object affects how its orbit and rotation change under the influence of the gravity of a massive body. By measuring the angular velocity of an object, one can reconstruct the density distribution.
The researchers note that the internal structureThe asteroid provides scientists with a wealth of information about its composition and evolution. But most modern methods of observing space objects do not allow you to look inside. The AIME program, developed by planetary scientists, will help solve this problem.
For correct calculation with high accuracyseveral conditions must be met simultaneously, the authors add. First of all, mapping is sensitive to the accuracy of measurements, for example, the estimation of the rotation period should be performed with an error of no more than 0.27 s. And, secondly, the changes will be significant only with a really close approach: the perigee (the point of the orbit closest to the Earth) should be at a distance of no more than 18 Earth radii from our planet.
Researchers say new method could helpit is better to plan for missions to protect the Earth from external collisions, like DART, which NASA recently conducted. Knowing the distribution of mass within an object makes it easier to find the correct point of impact to change the orbit.
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