Monday , May 16 2022

The interstellar asteroid was twice as small


Intermediate asteroid canceled down belowThe asteroid reflects ten times as much light.

After analyzing the Spitzer telescope's data, astronomers discovered that the first interstellar object was discovered – the Omului asteroid – nearly twice as small as it had been previously thought. The study was published in The Astronomical Journal.

Asteroid 1I / Omvamvi was found in October 2017. At first it was considered a comet, but then the astronomers agreed with the thought that it was an asteroid with an unusual shape of a cigar. According to previous data, which scientists use Pan-STARRS 1 telescopes, Hubble and other observatories, the lengths of the Omvamvi can be no more than 800 meters. In order to get new information about this, NASA's astronomers in November 2017 were targeted at the asteroid infrared telescope Spitzer.

But within two months, the telescope was not able to repair the tracks of the Omvam. Based on this, astronomers have concluded that the size of the asteroid is much smaller than those that can "see" Spicer. To estimate the size of the Omwami, scientists have decided to use three independent models to find out the maximum dimensions of objects that can repair the telescope. They obtained results of 100, 140 and 440 meters – that is, Spitzer would see any object with a maximum dimension ranging from 100 to 440 meters. Therefore, within these limits, and the length is Omvamvi in ​​the form of a cigar.

In addition, astronomers have learned that the asteroid reflects ten times more light than it flies into the Solar System of the Comet. This conclusion is made by researchers made due to the temperature of the Omvamwa: smaller, more light and heat reflect.

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