An asteroid is headed towards the United States and is supposed to reach earth a day before US Presidential elections, according to NASA.

NASA says there are three potential impacts, but "based on 21 observations spanning 12.968 days," the agency has determined the asteroid probably -- phew! -- won't have a deep impact, let alone bring Armageddon.

The asteroid, which was first discovered in Palomar Observatory in California in 2018, can have three impacts but NASA data shows that "based on 21 observations spanning 12.968 days", there is only a 0.41 percent chance of the asteroid actually hitting the Earth.

Even if it does enter the atmosphere, the asteroid is only around six and a half feet in diameter.

Scientists suggest the asteroid if it enters orbit, would break apart on entry and create a bright meteor.