NASA and other space agencies monitor near-Earth asteroids. Here are some upcoming asteroid encounters: 

• 2023 MU2: On June 25, 2023, this asteroid will pass Earth at a distance of 215,000 km, which is 60% of the average lunar distance. 
• 2023 TK15: This asteroid will pass Earth at a distance of 379,994 km, which is closer than the Moon. 
• Apophis: In 2029, this asteroid will pass within 20,000 miles of Earth. 

According to NASA, there is no known significant threat of impact for the next hundred years or more

According to NASA, Asteroid 2023 TK15 will pass Earth at an extremely close distance of just 379,994 km, which is even closer than the Moon. Just to put it into perspective, the distance of the Moon from Earth is 384,400 km. Hence, it will be one of the closest asteroid approaches of the year so far

Here are some other asteroids that have passed close to Earth in 2023: 

• 2023 QK5: On August 29, this asteroid passed Earth at a distance of 1.5 million kilometers. 
• 2023 QD2: On August 29, this asteroid passed Earth. 
• 2023 RF3: On September 28, this airplane-sized asteroid passed Earth at a distance of 5,910,000 kilometers. 
• 2023 VR5: On November 28, this asteroid passed Earth at a distance of 1.26 million miles. 
• 2023 OE5: This asteroid is estimated to be the size of a house. 
• 2023 CL3: On May 24, this asteroid passed Earth at a distance of 7.2 million kilometers. 
• 2023 TV3: On October 12, this bus-sized asteroid passed Earth at a distance of less than 1/4 the Moon’s distance.

NASA’s Calculated Impact ProbabilityNASA’s Center for Near Earth Object Studies (CNEOS) has calculated a substantial probability that 2007 FT3 might collide with Earth as early as October 2024. The numerical estimate stands at 0.0000087 percent, reflecting a 1 in 11.5 million chance of impact

According to NASA, there is a 1 in 11.5 million chance that the asteroid 2007 FT3 will collide with Earth in October 2024. The asteroid is 0.21 miles in size and weighs 54 million tons. If it hits Earth, it could cause significant regional damage. 

The asteroid has the potential to release energy equal to 2.6 billion tons of TNT. NASA’s Center for Near Earth Object Studies (CNEOS) estimates that the asteroid is on a trajectory that could bring it back to Earth.

Projected Impact DateNASA projects a potential impact date for 2007 FT3 on October 5, 2024. However, this prediction remains subject to updates as scientists continuously monitor and refine their understanding of the asteroid’s trajectory

NASA’s Asteroid Watch Twitter account posts about asteroids. 

NASA also has a Double Asteroid Redirection Test (DART) team. In 2022, DART collided with an asteroid and changed its orbit. This technique could be used for planetary defense. 

NASA is also watching the asteroid Bennu, which passes by Earth every six years. Bennu could potentially affect an area the size of Texas

As of the latest observations, the 2027 asteroid is estimated to be approximately **140 meters** in diameter. This size places it in the category of a small to medium-sized asteroid. While not among the largest asteroids known, it is still large enough to warrant attention from space agencies and scientists.

The 2027 asteroid is estimated to be about 140 meters in diameter. The asteroid is named “2019 PDC” and is between 330 and 1000 feet in size. This is roughly the length of 6.5 school buses or the height of two Washington Monuments stacked on top of each other

The asteroid has a 10 percent chance of hitting Earth in 2027. NASA has been simulating the asteroid’s size and path to get a better idea of its trajectory.

Estimated to be about 1,100 feet (340 meters) across, Apophis quickly gained notoriety as an asteroid that could pose a serious threat to Earth when astronomers predicted that it would come uncomfortably close in 2029

The asteroid Apophis is estimated to be 1,100 feet (340 meters) wide. It’s also known as asteroid 99942

Apophis is a near-Earth object that could cause serious damage if it hit Earth. In 2004, observations indicated a 2.7% chance of Apophis hitting Earth on April 13, 2029. However, radar observations in 2021 ruled out an impact for at least 100 years. 

Apophis will pass within 19,800 miles (31,860 km) of Earth’s surface on April 13, 2029. It will be visible to the naked eye for a few hours. It will first appear in the night sky over the southern hemisphere, looking like a speck of light moving from east to west over Australia. 

Apophis will also pass safely past Earth in 2036. In 2068, it may hit Earth.

Apophis will get within around 20,000 miles (32,000 kilometers) of Earth on Friday, April 13, 2029. This is within the distance that geosynchronous satellites orbit and 10 times closer than our moon. Apophis will even be visible to the naked eye in some parts of the world during its rendezvous.

Apophis will be visible to the naked eye for a few hours on April 13, 2029. It will appear as a bright star (magnitude 3.1) moving quickly across the sky. It will be visible from Europe, Africa, and western Asia

Apophis will be visible without the aid of a telescope or binoculars to observers on the ground in the Eastern Hemisphere. It will be 10 times closer to Earth than the moon and closer than the distance of geosynchronous satellites

On April 13, 2029, Apophis will pass less than 20,000 miles (32,000 kilometers) from our planet’s surface – closer than the distance of geosynchronous satellites. During that 2029 close approach, Apophis will be visible to observers on the ground in the Eastern Hemisphere without the aid of a telescope or binoculars

Apophis will be visible from parts of Europe, Africa, Australia, and South America. It will be visible to billions of people. 

Apophis will be visible as a bright star (magnitude 3.1) moving quickly across the sky. It will be as bright as a satellite. 

NASA’s OSIRIS-APEX mission will study the physical changes to Apophis that result from its close encounter with Earth.

Asteroid 99942 Apophis is currently 261,118,397 kilometers from Earth. This is equivalent to 1.745469 Astronomical Units. Light takes 14 minutes and 28.3465 seconds to travel from Apophis to Earth. 

Apophis is a near-Earth asteroid, which means its orbit brings it within 1.3 times the distance between the Sun and Earth. It was discovered in 2004 by astronomers at the Kitt Peak National Observatory in Arizona. 

Apophis is named after the Egyptian god of chaos

Asteroid Apophis is expected to travel at a speed of 12.6 kilometers per secondwhen it’s closest to Earth. This is almost twice the speed of a hypersonic ballistic missile. 

Apophis is an Earth-crossing asteroid. It’s part of a group of asteroids called “Atens”. These asteroids have orbits that are smaller than Earth’s orbit. Apophis orbits the sun in 323.6 days, which is less than one Earth year

The chance of a 1-kilometer asteroid hitting Earth in the next 100 years is about 0.000100 or 1 x 10^(-4). This is calculated by: 

1. Dividing the average rate of 1 asteroid per million years by 1 million 
2. Calculating the probability of an asteroid not hitting Earth in one year 
3. Raising the probability from step 2 to the power of 100 
4. Subtracting the probability from step 3 from 1 

The chance of a 10-kilometer asteroid hitting Earth is 0.000001%. This is about once every 20 million years. 

According to Mashable, there’s no known threat of collision for the next century. Space.com says that Earth is probably safe from a devastating asteroid impact for 1,000 years.

In fact, currently, there are no large asteroids predicted to hit Earth for the next 100 years. The object with the highest probability of colliding with Earth was the 1,100 feet (340 m) wide asteroid 99942 Apophis, which was predicted to get dangerously close to Earth in 2068(full article source google)