  By means of a fully connected artificial neural network, we identified
asteroids with the potential to impact Earth. The resulting instrument, named
the Hazardous Object Identifier (HOI), was trained on the basis of an
artificial set of known impactors which were generated by launching objects
from Earth's surface and integrating them backward in time. HOI was able to
identify 95.25% of the known impactors simulated that were present in the test
set as potential impactors. In addition, HOI was able to identify 90.99% of the
potentially hazardous objects identified by NASA, without being trained on them
directly.
