Scientists have discovered the largest potentially dangerous asteroid in recent years

Astronomers have found three unknown near-Earth asteroids, one of which is the largest potentially dangerous asteroid discovered in the last eight years.

BingMag.com Scientists have discovered the largest potentially dangerous asteroid in recent years

Astronomers have found three unknown near-Earth asteroids, one of which is the largest potentially dangerous asteroid discovered in the last eight years.

Nearby The Sun, however, has discovered fewer asteroids, and there is a clear reason: the sun's high brightness makes small, dim asteroids undetectable. Thus, to increase the probability of finding an inner asteroid, astronomers should choose the hours of dawn and dusk, when the sun's glare is more below the Earth's horizon and at the same time provides enough light to illuminate the inner asteroids.

According to the article published in "Astronomical Journal" (Astronomical Journal), a research team headed by "Scott S. Scott S. Sheppard, an astronomer from the Carnegie Institute of Science, made amazing discoveries with this method. One of these detected objects was 2021 PH27. An asteroid with only 113 days has the shortest orbit among discovered asteroids. The orbit of the other asteroid, 2021 LJ4, is completely within the Earth's orbit around the Sun. These types of asteroids are known as "Atira Asteroids".

Shepard said about the new findings: "So far we have found two large near-Earth asteroids that have a diameter of about 1 kilometer, the size that We call it the planet killer. There are probably only a few undiscovered near-Earth asteroids of similar sizes whose orbits keep them within the orbits of Earth and Venus most of the time. Due to the difficult observational conditions, only about 25 asteroids with completely sub-Earth orbits have been discovered so far."

The third asteroid is 2022 AP7 and an Apollo-type asteroid. Asteroids that have an elliptical orbit and go from a region near the Sun to somewhere beyond the Earth's orbit. By crossing Earth's orbit, Apollo asteroids, such as 2022 AP7, can reach a threatening distance from our planet and are therefore classified as "potentially hazardous" objects.

So far, more than 2000 potentially hazardous asteroids that The largest of them is about 7 km wide, they have been identified. By having their orbital information, it is possible to estimate when they might be in a dangerous range for Earth, so that they can be diverted if needed by missions like NASA's Dart.

The new discovery of Atyra asteroids is particularly It is important that it increases our understanding, which is mostly based on censuses of space rocks in distant places, of what exists in the inner solar system and provides more information about the dynamics and evolution of the solar system and the way asteroids are transported to different regions. "Our DECam survey is one of the largest and most sensitive searches ever conducted for near-Earth objects and a unique opportunity to understand the variety of hidden objects in the solar system," Shepard said. It is the internal solar system. Interestingly, despite the greater sensitivity of this science experiment to smaller objects, the number of larger asteroids detected, those at least one kilometer across, is higher. This could mean that smaller asteroids in the inner solar system are less stable, or are more prone to break up in the extreme heat and gravity environments close to the sun.

Cover photo: A graphic design of an inner solar system asteroid Shamsi
Credit: DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA/J. da Silva/Spaceengine

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