NASA’s Jet Propulsion Laboratory (JPL) claim the space rock will shoot past the earth within a “close” proximity of the planet in the early hours of October 26. The asteroid, dubbed 1998 HL1, is a so-called Near-Earth Object (NEO) flying on a Close Approach Trajectory. NASA expects the 1998 HL1 to come flying by dangerously close around 1.21am BST (17.21pm PDT).
The daunting moment will mark anther journey around the sun for the asteroid since it was discovered in 1998.
The asteroid will be travelling at a staggering speed of over 25,000mph as it barrels past the Earth.
The JPL predict the asteroid could be between 440m and 990m wide.
At its largest an asteroid of this size is bigger than the tallest building in the world, the Burj Khalifa in Dubai.
Even at it’s smallest, 1998 HL1 is still bigger than The Shard.
Since it was discovered, 1998 HL1 has been seen up to 408 times.
An NEO is an asteroid or comet which is on an orbital path intersecting that of the Earth’s.
This asteroid will miss the Earth by almost four million miles.
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The majority of asteroids on track for the planet are usually burnt up as they enter the Earth’s atmosphere.
NASA administrator Jim Bridenstine has previously warned a potential asteroid collision is more likely then people realise.
He said: “We have to make sure that people understand that this is not about Hollywood, it’s not about the movies.
“This is about ultimately protecting the only planet we know, right now, to host life – and that is the planet Earth.”
NASA is currently in the process of developing the Double Asteroid Redirection Test (DART).
DART will test if it is possible to redirect asteroids that are threatening to impact with Earth.
SpaceX chief Elon Musk had previously tweeted fears of a deadly collision that Earth was not prepared for.
Mr Musk tweeted: “A big rock will hit Earth eventually & we currently have no defence.”
NASA assures on its JPL website that “no one should be overly concerned” about the impact of an asteroid or comet.
NASA’s website said: “No known asteroid poses a significant risk of impact with Earth over the next 100 years.”