The asteroid, named 2019 SG1, was first observed in the solar system on Friday, September 20. Since then, NASA has tracked the asteroid 22 times to determine its size, speed and orbit. The US Space Agency concluded that the asteroid SG1 flies in a "near" trajectory towards Earth. The asteroid is expected to approach Earth this evening at 8:08 pm BST (8:08 pm UTC).
What do we know about the asteroid 2019 SG1?
The asteroid 2019 SG1 is an Apollo-type rock orbiting the inner circle of the solar system.
Apollo asteroids cross Earth orbit similar to the asteroid in 1862.
NASA has also classified SG1 as a NEO or near-Earth object.
NEOs are all comets and asteroids that are within 1
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NASA said, "Some asteroids and comets follow orbits that bring them much closer to the sun and thus to the earth than otherwise."
"When a comet or asteroid approaches 1.3 astronomical units from the sun , one speaks of a near-Earth object. "
NASA estimates that the space is somewhere in the range of rock dimensions The asteroid has a diameter of 7.4 m to 17 m.
At the top end of the NASA conjecture, it is twice as long as the London double-decker bus.
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Such a large asteroid would most likely disintegrate before it reaches the bottom.
Earlier impacts, however, prove that an asteroid does not have to hit the ground to cause chaos and destruction.
In 2013, when a 65.6-foot (20 m) wide rock hit the atmosphere over the Chelyabinsk Russian region, the rocky object exploded before struck.
However, the resulting Arblast spread over a wide radius, inflicting more damage to more than 7,000 buildings and more than 1,000 casualties with blown-out window shards.
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At its coziest approximation of our home planet, Aste roid SG1 will lie within .00567 astronomical units.
A single astronomical unit describes the distance from Earth to the Sun – approximately 93 million miles (149.6 million km).
In other words, the asteroid will miss the earth around a safe 848,219.93 km (527,059 miles).
The distance is just 2.21 lunar (LD) or more than twice the lunar distance.