The NASA tracked asteroids are expected to make a so-called “Earth Close Approach” by noon on Friday, January 25. The first of the three space rocks, dubbed by NASA Asteroid 2019 AJ13, will swing by around 12.47am GMT (UTC). Asteroid 2019 AN12 and Asteroid 2019 AG11 will then fly by around 2.30am and 12pm GMT respectively.Asteroid AJ13 will be the first and closest of the three asteroids to approach the planet.
But even at its closest, the asteroid will miss the planet by more than 1.8 million miles (2.93 million km).
NASA’s California-based Jet Propulsion Laboratory (JPL) estimates AJ13 will approach Earth from 0.01952 astronomical units (au).
This is approximately 7.6-times the distance from Earth to the Moon.
One astronomical unit measures roughly 93 million miles (149.6 million km) – the distance from the Sun to the Earth.
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Asteroid AJ13 will significantly cut this distance down, earning it the title of a so-called “Near-Earth Object”.
NASA explained: “As they orbit the Sun, Near-Earth Objects can occasionally approach close to Earth.
“Note that a ‘close’ passage astronomically can be very far away in human terms: millions or even tens of millions of kilometres.”
NASA’s JPL estimates Asteroid AJ13 measures somewhere in the range of 19.3ft to 42.6ft (5.9m to 13m) in diameter.
Orbital calculations show the asteroid is travelling through space at a speed of 13,399mph (5.99km per second).
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Shortly after, Asteroid AN12 will close in on our home world from 0.02348au or 2.18 million miles (3.5 million km).
The asteroid measures in the range of 72ft to 160ft (22m to 49m) in diameter.
After the asteroid zips past the Earth, NASA expects AN12 to approach the Earth one more time in 50 years.
The asteroid will make another Earth Close Approach around 11.26pm GMT on January 25, 2069.
Tomorrow, the rogue space rock will move at incredible speeds of 45,320mph (20.26km per second).
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Asteroid AN12 will be followed by Asteroid AG11’s close flyby at noon.
The asteroid measures somewhere in the range of 49.2ft to 108.2ft (15m to 33m) across.
The space rock will dash through space at breakneck speeds of around 16,777mph or 7.5km per second.
At its closest, the asteroid will approach Earth within 0.02208au or just more than two million miles (3.3 million km).
Thousands of asteroids pelt the Earth every single day but most of the burn up in the atmosphere before they can cause any damage.
NASA said: “Several thousand meteors enter Earth’s atmosphere each day.
“The vast majority of these, however, occur over the oceans and uninhabited regions, and a good many are masked by daylight.
“Those that occur at night also are rarely noticed by people. Due to the combination of all of these factors, only a handful of witnessed meteorite falls occur each year.”