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Planetary Defense Conference Exercise - 2021

This webpage does not describe a real potential asteroid impact. The information on this page is fictional and provided only to support an emergency response exercise conducted during the International Academy of Astronautics (IAA) 2021 Planetary Defense Conference (virtually) in Vienna, Austria, April 26–April 30, 2021. This is only an exercise.

The 2021 PDC Hypothetical Asteroid Impact Scenario, Final: April 29, 2021


  • Background information on the scenario.
  • To study this scenario using the JPL HORIZONS system, click here.
  • Description of NASA/JPL NEO Deflection App.
  • Using the Deflection App for the PDC 2015 scenario.