Asteroid Apophis Discovery in 2004: Initial High Impact Risk Rating

On June 19, 2004, astronomers Roy Tucker, David Tholen, and Fabrizio Bernardi discovered the near-Earth object Asteroid Apophis at the Kitt Peak National Observatory. This asteroid, measuring approximately 335 to 375 meters in width, was initially assigned the highest possible rating of level 4 on the Torino Impact Hazard Scale. This rating indicated a significant, though not certain, risk of Earth impact. Subsequent observations have refined the understanding of its orbital path, reducing the immediate impact concerns. However, the initial discovery highlighted the importance of monitoring potentially hazardous asteroids. The event underscored the need for ongoing astronomical surveillance. Apophis remains a subject of interest in planetary defense studies. Its discovery marked a notable moment in asteroid research.

The discovery of Asteroid Apophis and its initial high impact rating underscored the importance of asteroid monitoring and planetary defense efforts.