The asteroid, named 2019 SG1, was first observed in the solar system on Friday, September 20th. NASA monitors the asteroid 22 times to determine its size, velocity, and orbital path. The US Space Agency has concluded that Asteroid SG1 is flying in the Earth's direction in a "near" trajectory. The asteroid is expected to close on Earth tonight around 10.08 BST (9.08pm UTC).
What do we know about Asteroid 2019 SG1?
The asteroid 2019 SG1 is an Apollo scale orbiting the inner circles of the solar system.
Apollo type asteroids pass around the Earth's orbit in a similar manner to the 1862 Apollo Asteroid.
NASA also classified SG1 as an object of NEO or around Earth.
NEO are all comets and asteroids that enter within 1
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NASA said: "Some asteroids and comets follow orbital paths that take them much closer to the Sun and follow the Sun Earth – than usual.
"If a comet or asteroid brings it closer to 1.3 astronomical units of the Sun, we call it a near-Earth object."
NASA calculates that space space measures a rock somewhere in the bell, with a diameter of 24, with a diameter of 24 3 ft to 55.7 ft (7.4 m to 17 m)
At the upper end of the NASA assumption, the asteroid is twice as long as the London double-decker bus.
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The asteroid that is large is likely to disintegrate before it reaches the earth.
However, past strikes prove that an asteroid does not have to hit the earth to cause chaos and destruction.
When a rock 65.6 feet (20 m) wide hit the atmosphere above Russia's Chelyabinsk region in 2013, the rocky object exploded before it struck.
But the resulting arblast spread over a wide radius, damaging more than 7,000 buildings and injuring more than 1,000 people with parts of blasted windows.
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Will the 2019 SG1 asteroid hit Earth tonight?
On our home planet's most comfortable approach, Ast roid SG1 will come within 0.00567 astronomical units.
An astronomical unit describes the distance from Earth to the Sun – about 93 million miles (149.6 million km).
In other words, the asteroid will skip Earth from a safe distance of 527 059 miles (848 219.93 km).
The distance is equivalent to only 2.21 lunar distances (LD) or more than twice the moon.