As of 2023, the distance between the orbits of Earth and 2011 AG5 is 0.0004 AU (60,000 km; 0.16 LD)[1] 2011 AG5 was discovered on 8 January 2011 by the Mount Lemmon Survey at an apparent magnitude of 19.6 using a 1.52-meter (60 in) reflecting telescope.

[3] The October 2012 observations reduced the orbit uncertainties by more than a factor of 60, meaning that the Earth's position in February 2040 no longer falls within the range of possible future paths for the asteroid.

[5] A Torino rating of 1 is a routine discovery in which a pass near the Earth is predicted that poses no unusual level of danger.

[9] It is estimated that an impact would produce the equivalent of 100 megatons of TNT,[4] roughly twice that of the most powerful nuclear weapon ever detonated (Tsar Bomba).

Virtual clones of the asteroid that fit the mid-2012 uncertainty region in the known trajectory showed four potential impacts between 2040 and 2047.