The Planetary Defense Coordination Office (PDCO) is a planetary defense organization established in January 2016 within NASA's Planetary Science Division of the Science Mission Directorate.[3] It includes a Near Earth Observations Program which funds telescopic searches and orbit calculations.[4]
Its mission is to look for and catalogue near-Earth objects such as comets, asteroids, and potentially hazardous objects that could impact Earth, as well as help the U.S. government prepare for a potential impact event (and coordinate efforts to mitigate and deflect potential threats if one is detected).[5]