A potentially hazardous asteroid that had a small chance of smashing into Earth this September isn't heading for our planet after all.
Astronomers ruled out the asteroid's chance of impact with Earth after they were not able to spot it within the area of its predicted collision course, making it the first time an asteroid impact was ruled out based on "non-detection."
The asteroid, named 2006 QV89, was discovered on Aug. 29, 2006 by the Catalina Sky Survey near Tucson, Arizona. It measures between 70 to 160 feet (20 to 50 meters) in diameter, or somewhere between the length of a bowling alley and the width of a football field. Observations suggested that it had a one-in-7,000 chance of impacting Earth on Sept. 9, 2019.
After its discovery in 2016, the asteroid was observed for 10 days before disappearing from the astronomers' sight, according to a statement by the European Southern Observatory (ESO). As the date for the potential collision approached, astronomers could only predict the location of the asteroid with very low accuracy, which made it difficult to locate with a telescope.
In order to confirm whether or not the asteroid was still headed for collision with Earth, astronomers at the European Space Agency (ESA) and ESO took a different approach. Rather than trying to observe the asteroid itself, astronomers observed where it should have been if it were, in fact, heading toward Earth.
Using ESO's Very Large Telescope (VLT), they captured deep images of the area where it would have been if it were on track to collide with our planet, ESO officials said in the statement. Following observations of the area on July 4-5, astronomers could not find the asteroid and therefore concluded that it would not be impacting Earth.
Even if the asteroid is smaller than initially believed, it would have been spotted by the telescope, ESO said in the statement. And if it were any smaller than that — too small for the telescope to detect — it would pose no threat to Earth, as it would burn up in the planet's atmosphere.
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