The asteroid, called 1999 RQ36, has a one-in-thousand chance of actually hitting the Earth at some point before the year 2200, but is most likely to hit on Sep 24, 2182.
It is believed that this asteroid led to the extinction of the dinosaurs.
Scientists around the world have long been discussing ways of deflecting potentially hazardous asteroids to prevent them from hitting the Earth.
One of the more popular methods is to detonate a nuclear warhead on an approaching asteroid to deflect it from its orbital path.
the scientists had warned that if the asteroid had not been spotted until after 2080, it would have been impossible to divert it from its target.