The fast asteroid is expected to swing along the so-called Earth-moving trajectory. According to NASA, the closest approach to the asteroid will occur on the afternoon of Halloween, October 31st. When that happens, NASA estimates that the space rock will reach speeds of about 19 215 mph (30,924 km / h).
What do we know about the 2019 UJ3 asteroid?
Astronomers have called the rocky body Asteroid 2019 UJ3 since its discovery on October 19 this year.
The cosmic rock is an Apollo-type asteroid, which means that it orbits the Earth in an orbit similar to the 1862 Apollo Apollo.
NASA has also classified an asteroid near the Earth or NEO.
NEOs are all comets and asteroids in orbital trajectories that approach astronomically our planet.
READ MORE: NASA just traced two large rocks flying past Earth
In most cases, NEOs pass harmlessly across our planet without threatening them.
But if the NEO is large enough to warrant NASA interest, the space agency will closely monitor its prognosis. [1
"If a comet or asteroid approach brings it to 1.3 astronomical units of the Sun, it is an object near Earth. ”
The 2019 UJ3 asteroid is thought to measure anywhere in the range of 55.7 feet to 124.6 feet (17 meters to 38 meters) in
Will the 2019 UJ3 asteroid hit Earth on Halloween?
Fortunately, NASA does not expect UJ3 to come close enough to pose a threat to Earth.
The asteroid will approach Earth from a distance of about 0.01871 astronomical units.
An astronomical unit is the distance from Earth to the Sun – about 93 million miles (149.6 million km).
The asteroid UJ3 will shorten this to just 1.7 million miles (2.79 million km) on Halloween night.
NASA said, "As they orbit the orbit of the sun, near-Earth objects can sometimes approach close to Earth.
"Note that the" near "astronomical passage can be very far in human terms: millions or even tens of millions of kilometers. "
Quick facts about asteroids and other cosmic rocks:
1. Some of the larger objects in the asteroid belt are approximately 583 miles long.
2. NASA estimates that a car-sized asteroid collides with the Earth about once a year.
3. According to the Cosmic Space Rock, cosmic rocks the size of a football field descend on the planet about once every 2,000 years.
4. If a meteor survives a descent through the atmosphere, it is called a meteorite.
5. Comets are different from asteroids because they are covered in ice layers that sublimate in space.