Astronomers study old data and find more than half a million new asteroids

A pair of astronomers discovered and classified half a million new asteroids, information about which is in

old data, but previous researchers were unable to locate them. Finding out exactly where these objects came from may be important for understanding the properties of the early solar system.

Alexey Sergeev and Benoit Curry from the UniversityThe French Riviera discovered these objects by automatically analyzing images from the Sloan Digital Sky Survey (SDSS). This is a large-scale project, the results of which were presented in 2020. Scientists have been collecting data for over 20 years using a telescope at the Apache Point Observatory (New Mexico, USA).

Based on the collected data, astronomers have created more and more detailed maps of the cosmos. The result of the study was a huge three-dimensional map that covers the entire history of the formation of the Universe.

Scientists have determined the trajectory of the dangerous for the Earth astroid Bennu

As a result of the analysis, scientists released a catalog of1.5 million, consisting of 1,036,322 observations of 379,714 known and unique space objects. However, they also discovered 506,000 moving objects that were previously unknown to scientists. The catalog completeness is estimated at about 95%, and the purity is over 95% for known space objects.

Scientists added that the small bodies of the solar system(asteroids, comets) are used to limit the options for the origin and evolution of the solar system. Their orbital distribution and composition distribution are necessary to track the dynamic path from the regions of their formation to their present location.

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