Scientists recently tracked an asteroid with dimensions comparable to the Empire State Building. The oblong space rock, dubbed 2011 AG5, measures about 1,600 feet long by about 500 feet wide, and was tracked from January 29 to February 4, 2023, as it flew past Earth at a distance of approximately 1.1 million miles. "Of the 1,040 near-Earth objects observed by planetary radar to date, this is one of the most elongated we've seen," said JPL principal scientist Lance Benner. Asteroid 2011 AG5 is the color of dark charcoal, takes nine hours for one rotation, and completes an orbit around the Sun every 621 days.