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There is no threat from a space rock that was near the top of the hazardous potential impact list. We can all breathe a sigh of relief now that the object will not be hitting Earth in 2052.
Mount Lemmon Observatory in Arizona discovered the 50-meter-wide asteroid 2021 QM1 in August 2021. Everything is fine so far. According to the European Space Agency (ESA), a dark sky and a good observatory can spot around a dozen near-Earth objects every night.
Richard Moissl, ESA's Head of Planetary Defence, said, 'These observations provided us with additional information about the asteroid's future path.'
“The orbit of the asteroid around the sun could change in 2052, and it could approach the Earth in a dangerous way. That risk would increase as more observations of the asteroid were made.”
As information about this asteroid began to seem alarming, the object's trajectory brought it into close proximity to the Sun as seen from Earth, rendering the glare of our star impossible to track.
“We just waited for it to happen,” said Marco Micheli from the Near-Earth Object Coordination Centre of ESA. 'However, we also knew that 2021 QM1 was also moving away from Earth in its current orbit, which means that by the time it had passed out of the Sun's glare, it might have become too faint to detect.'
However, despite quite a bit of difficulty, the Very Large Telescope (VLT) of the European Southern Observatory was ready to try to spot the asteroid as soon as it became visible again.
The Milky Way was just in front of the passing star as it passed through the region of the sky. ESO's Olivier Hainaut said we would have to find our small, faint, receding asteroid against a backdrop of thousands of stars. 'These would come out to be some of the most challenging asteroid observations ever made.'.
The asteroid actually turned out to be the faintest ever seen. In comparison with the faintest stars still visible to the human eye, QM1 had a magnitude of 27 on the scale used by astronomers to measure brightness.
The higher the number, the brighter the object. In comparison, Betelgeuse, the 10th brightest star in the sky, has a magnitude of 0.42 and the Sun has a magnitude of -27. Astronomers refine the asteroid's path with images taken on May 24, ruling out a 2052 impact and removing it from the high-risk list.
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