The fast-moving asteroid stands taller than Big Ben's clock tower, heading toward us in the Middle Approach trajectory. NASA expects the asteroid to close on Earth at about 2.19 pm BST (1.19 pm UTC) on Sunday, September 22nd. During the approach, the asteroid will fly at a speed of 8.19 km per second or 18 312.51 mph (19 484 km / h). NASA has named the big space rock Asteroid 2019 QZ1.
What do we know about Asteroid 2019 QZ1?
The asteroid QZ1 is a near-Earth object of the Apollo or NEO type trapped in the inner solar system.
The asteroid crosses the Earth's orbit in a manner similar to Asteroid 1862 Apollo.
NEOs are all asteroid and cosmic rocks approaching the Earth in their orbits of the Sun.
NASA says, "Some asteroids and comets follow orbital paths. which take them much closer to the Sun and therefore to Earth ̵
"If a comet or asteroid brings it closer to 1.3 astronomical units of the Sun, we call it a near-Earth object." first seen on our system on August 20th.
Since then, a total of 12 observations have helped NASA calculate the size, speed and orbit of the scale.
NASA estimates asteroid measures s anywhere from 187 feet in diameter to 426.5 feet (57 meters to 130 meters) in diameter.
At the top of this estimate, the asteroid stands taller than St. Paul's Cathedral and the Big Ben Clock Tower in London.
An object so large can cause significant damage if it hits the planet.
READ MORE: Only cockroaches will survive major asteroid impact, expert warns
Will QZ1 asteroid hit the planet later tonight? Fortunately, based on NASA calculations, there is no danger of the asteroid crashing to Earth at full speed this evening.
The closest asteroid will approach the planet at a distance of 0.03198 astronomical units.
And a single astronomical unit measures about 93 million miles (149.6 million km) – the distance between Earth and the Sun
In other words, we will miss the asteroid tonight by more than 2.9 million miles (4.78 million km).  READ MORE: "Hand Out the Bibles" is the only appropriate asteroid warning for 24 hours
The distance is approximately 12.45 times farther from the moon.
NASA said, "As they orbit the Sun, objects near the Earth can sometimes approach near the Earth.
"Note that the" near "astronomical passage can be very far in human terms: millions or even tens of millions of kilometers."
After flying over tonight, the cosmic rock is not expected to approach Earth again. .