Astronomers have designed the asteroid population faster, and those designs predict that there will be asteroids about 1 km in size orbiting closer to the Sun than Venus. The problem is that no one could find it. Until.
Managing astronomers Swicky Transient Facility The condition in which they finally found one. But it is large, about 2 km. If its presence can be verified, the asteroid population design needs to be updated.
A new paper giving this result is available on the pre-press publishing website arXiv. For this “An asteroid about one kilometer in orbit around Venus“. He is a professor of astronomy at the Institute of Astronomy at the National Central University of Taiwan. The main author is Wing-Juan IP.
The newly discovered asteroid is called 2020 AV2, a aphelion It needs to do this with a limit of just 0.65 large systems, and a size of 2 km.
Its discovery is unexpected considering that none of these large asteroids within Venus’ orbit are predicted by designs. This may be evidence of a new population of asteroids, or it may be the largest population in the world.
The authors write: “If this discovery is not a statistic, 2020 AV2 could move from an internal population of undiscovered asteroids to Venus, and the current favorite asteroid population models need to be adjusted.”
It is associated with one million known asteroids, most of which are outside Earth’s orbit. There is only a small part of the Earth’s orbit.
Models predict that even smaller asteroids will be within Venus’ orbit. Calling those asteroids Vathiras
The 2020 AV2 was first identified by the Swicky Transient Facility (ZTF) on January 4, 2020. Further observations using the Palomer 60-inch telescope and Kit Peak 84-inch scope gathered more information.
At the end of January, astronomers used the Keck telescope for spectroscopic observation of the rock. That information is revealed from the inner region of the asteroid The main asteroid belt, In between Tuesday Thursday.
“These data favor a silicate S-type asteroidA similar composition corresponding to the origin of the S-type asteroids most numerous internal main belts. This is in line with the design of the Near Earth Asteroid (NEA), which predicts that… 2020 AV2 asteroids with orbital elements will originate from the inner main belt.
The 2020 AV2 is either a model-buster or a model confirmation.
“The NEA population models predict that the <1Inter-Venus asteroid 2020 AV2 will be one of the largest inner-Venus asteroids in the Solar System,” the authors write.
Either it makes the biggest sense because the biggest will be the first to be recognized, or we have yet to find more of them.
The authors analyzed what both situations indicate, including the 2020 AV2 discovery.
“Although unlikely, one possible explanation for the discovery of the 2020 AV2 is a random discovery from a nearby Earth asteroid population,” she writes.
“However, history shows that the first discovery of a new class of objects usually refers to another source population CF, i.e. the Kuiper Belt with the discovery of the first Kuiper Belt objects. 1992 QB1 And 1993 FW“
There is also a possibility that the 2020 AV2 will not come from the primary asteroid belt. Models reveal that there is an area within Mercury’s orbit where asteroids may have formed and that they may still be alive. “എ 2020 AV2 originated from the source of asteroids close to the Sun, i.e. near stability regions within Mercury’s orbit.1 0.1-0.2 au, where large asteroids can form and survive. Of the solar system. ”
2020 AV2 should not invest an eternity in its current orbit. The team of scientists performed some simulations and revealed that the asteroid would be completely ejected from the solar system. “… In the dynamic N-body simulations of 2020 AV its ultimate ejection gas giant is advancing in its next orbit path in its own orbit.
When the 2020 AV2 was first discovered, researchers were skeptical about the journey to be reached. They, too, question the ultimate destiny.
“Overcoming Venus’ orbit should be a challenge,” said George Hello, executive director of the IPAC Astronomy Center at Caltech and an ZDF co-investigator. Press release
Hello discussed that more asteroids need to move from the planetary system to Venus.
“It can only exit its orbit if it exits through a gravitational collision with Mercury or Venus, but will likely crash into one of these two planets.”
If this finding were the first of a total population of asteroids within Venus’ orbit, most would share the same fate. After about 10 to 20 million years, they will all be extinct.