NASA.gov brings you the latest images, videos and news from America's space agency. Asteroid 2019 OK has been near Earth before, but never so close. Get the latest updates on NASA missions, watch NASA TV live, and learn about our quest to reveal the unknown and benefit all humankind. Asteroid 2019 OK came hurtling toward Earth at a speed of nearly 15 miles a second, before flying past. According to NASA, it was about 45,000 miles from Earth on Thursday. The 2019 PDC Hypothetical Asteroid Impact Scenario. A hypothetical asteroid impact scenario will be presented at the 2019 IAA Planetary Defense Conference (PDC), to be held in College Park, Maryland, USA, April 29 - May 3, 2019.Although this scenario is realistic in many ways, it is completely fictional and does NOT describe an actual potential asteroid impact. Its last visit was February 1, 2017, though it sauntered past more than 25million miles from our planet's surface, according to Nasa. Asteroid 2019 OK passed relatively close to Earth, at about 70,000 kilometers away (43, 496 miles). The following table shows close approaches to the Earth by near-Earth objects (NEOs) limited as selected in the “Table Settings” below. Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 6 (heliocentric ecliptic J2000)