Wed. Oct 27th, 2021


The artistic interpretation of an asteroid belt.

The artistic interpretation of an asteroid belt.
Pictures: NASA

They’re red, they’re reasonably big, and they have no business In the original asteroid belt, but their discovery confirmed the complex state when the solar system was still being formed.

New Research Details of the discovery of two ultra-red main-belt asteroids published in The Astrophysical Journal Letter. Named 203 Pompeza and 269 Justitia, the main belt of asteroids has a red spectrum signature more than any other asteroid, which is the most dense band of asteroids located between the orbits of the planets Jupiter and Jupiter. Was led by the new paper Japan Space Exploration Agency (Jax) Astronomer Sanao Hasegawa.

Importantly, these red asteroids resemble trans-Neptune objects, i.e., objects in the FAThe farthest planet from the Sun is farther away from Neptune (the dwarf planet does not disrespect Pluto). This could mean that 203 Pompeii and 269 Justia Kuiper made their way there in the belt. And then sank inwards When the solar system was still small. If confirmed, the new investigation shows just how chaotic the situation was then And materials from different parts of the solar system sometimes merge together.

The purpose of the study was to record the distribution and composition of large asteroids in the main belt. Larger asteroids, especially larger than miles0 miles (100 km) in width, probably survived the first days of the solar system. By studying these objects, scientists hoped to get a glimpse of what the situation was like about 4 billion years ago.

To do this, astronomers observed the visible and near-infrared spectrum of the main belt using the Telescope Facility (IRTF) and the Seoul National University Astronomical Observatory (SAO). This international collaboration involves scientists from MIT, University of Hawaiii, Seoul National University, Kyoto University and several other institutions.

The asteroid 203 Pompeza measures 68 miles (110 km) in diameter, while the 269 Justitia is only half as large. Both have an unusual red spectrum, which means they reflect a lot of red light. These are even redder than D-type asteroids, which were previously believed to be the redtest objects in the asteroid belt.

The outer solar system is packed with material from the structure of the solar system, including planets (asteroids) and centaurs (icy planets between Jupiter and Neptune). These distant objects are very red, containing complex organic compounds such as methane and methanol ice. These compounds, when viewed by a spectrum, give an asteroid its reddish appearance. In contrast, objects in the inner solar system have few traces of organic matter, so they reflect blue light.

Asteroids 203 Pompeja and 269 Justitia “are thought to have formed far beyond the outer biological ice line near the outer edge of the solar system and then moved to the asteroid belt in the early days of the solar system’s formation,” a JAXA notes. Press release. By the “organic snow line”, scientists are referring to the location of the solar system where methanol and methane turn to ice.

This probe suggests some asteroids in the main belt formed in the outer solar system, and the population of this object may be in the main belt. A good next step would be to determine the exact proportions of the population of these red asteroids. What’s more, new research has shown the main belt as a good destination for future missions. Instead of traveling to the outer edge of the solar system for a Kuiper belt object sample, all we need to do is send a probe to the asteroid belt, where it can study both the inner object asteroids and those formed from a distance.

More: Comet 67p repeatedly changed color during the historic Rosetta mission.



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