The near-Earth asteroid called the 2024 YR4 has been closely monitored over the past few months as its chances of impacting Earth increased to about 3% in 2032. After the latest observations from the ESO's very large telescope (VLT), the probability of impact has decreased to about 0.001%.
2024 yr4 On December 27, 2024, the Asteroid Terrestrial Impact of Río Hurtado was discovered by the Last Alert System (Atlas) station.
Between 40-90 m in diameter, the asteroid took a close approach to Earth at a distance of 828,800 km (515,000 miles) two days before its discovery.
The 2024 YR4 is currently moving, with the next close approach taking place on December 17th, 2028.
On December 22, 2032, the asteroid quickly rose to the top of the ESA risk list due to its size and potential impact. This is a catalogue of all the space rocks that can affect Earth.
“Uncertainty means that the orbit of an asteroid is like a flashlight beam. It becomes wide and wide and ambiguous in the distance.”
“As we observe more, the beam becomes sharper and narrower. The Earth was illuminated more by this beam. The probability of impact increased.”
The observations of the new VLT, along with data from other observatory data, were able to exclude the impact on Earth in 2032 by Dr. Hainaut and his colleagues, but were able to constrain sufficient orbits for all.
“The narrower beams are now far from Earth,” Dr. Heinout said.
The impact probability reported by the ESA's short-range object adjustment center is about 0.001%, and asteroids no longer place the ESA risk list above.
As the 2024 YR4 is far from Earth, it has become increasingly faint and difficult to observe it with all but the largest telescopes.
“The VLT contributes to the observation of this asteroid due to its mirror size and excellent sensitivity, and is an excellent darker sky at the Delusional Observatory of ESO in Chile, where the telescope is located,” the astronomer said.
“This would ideally help track faint objects such as the 2024 YR4 and other potentially dangerous asteroids.”
“Unfortunately, the same pristine, dark sky that allowed these important measurements is now under threat by Industrial Megaproject Inna by AES Andes, a subsidiary of US utility AES Corporation.”
“The project plans to cover areas similar to the size of small cities and be located at the nearest point, about 11 km from VLT.”
“Because of its size and proximity, INNA will have a devastating effect on the quality of Paranal's sky, particularly due to mild contamination from industrial facilities.”
“In bright sky, telescopes like VLT lose the ability to detect the weakest universe's targets.”
Source: www.sci.news
