Pan-STARRS Discovers First Potentially Hazardous Asteroid

Pan-STARRS Discovers First Potentially Hazardous Asteroid: "The University of Hawaii’s Pan-STARRS PS1 telescope on Haleakala has discovered an asteroid that will come within 4 million miles of Earth in mid-October. The object is about 150 feet in diameter and was discovered in images acquired on September 16, when it was about 20 million miles away.
It is the first “potentially hazardous object” (PHO) to be discovered by the Pan-STARRS survey and has been given the designation “2010 ST3.”"