Skip Navigation

×This site requires JavaScript for most of its functionality. See these instructions for enabling JavaScript in your web browser.

2022 Interagency Tabletop Exercise (PD TTX4)

: Module 0 (Read-Ahead); Module 1; Module 2; Module 3; Module 4; Report - Final

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 Planetary Defense Interagency Tabletop Exercise 4 at Johns Hopkins University, Applied Physics Laboratory, in Laurel, MD, February 23 and 24, 2022. This is only an exercise.

Module 4 presentations

The 2022 TTX Hypothetical Asteroid Impact Scenario, Module 4: August 16, 2022

Asteroid 2022 TTX impacts the Earth’s atmosphere a few seconds before 2:02:10 pm EDT on August 16, 2022. The main airbust occurs at an altitude of about 8 miles.
The asteroid velocity at impact was 15.54 km/s (34,700 mph). The asteroid approached at a steep angle, 26 degrees from vertical, and the approach direction was from the north-northeast (NNE), 37 degrees east of north.