The asteroid, called 2014 QJ33, is expected to fly-by our planet on September 17.
It is classed as an Apollo asteroid, the name given to space rocks which cross the orbit of the Earth.
This is in comparison to Amor asteroids which cross the orbit of Mars, but not Earth.
The giant space rock is a Near Earth Object (NEO), which NASA say refers to any comet or asteroid that hurtles at 1.3 astronomical units – the average distance between Earth and the Sun.
(Image: Getty Images)
Asteroid 2014 QJ33 is expected to pass our planet safely at a distance of 6.67 lunar units. In simple terms, that’s 1,592,819 miles away from Earth.
The rock will be travelling at a speed of 8.66 kilometres a second or 19,371 miles per hour.