The Guardian (USA)

Asteroid lights up sky over Channel creating shooting star effect

- Kevin Rawlinson

An asteroid has lit up the sky over the Channel in the early morning after scientists accurately predicted its strike – only the seventh time that has happened.

The European Space Agency said on Sunday night that the 1-metresized object would enter Earth’s atmosphere and strike the surface around the French city of Rouen. The BBC then reported that it was seen over the Channel,

creating a stunning shooting star effect.

The ESA named the small asteroid that entered the Earth’s atmosphere on Monday, Sar2667, adding that its prediction was “a sign of the rapid advancemen­ts in global asteroid detection capabiliti­es”. The BBC reported that the Internatio­nal Meteor Organizati­on, a Belgium-based non-profit organisati­on, said the object would have entered about 4km (2.5 miles) from the French coast, and would create a “fireball” effect.

The ESA’s scientists have described how the previous prediction came about, explaining that the “initial discovery of asteroid 2022 WJ1 came from the Catalina Sky Survey – one of the major projects dedicated to the discovery and follow-up of near-Earth objects” occurred on 19 November 2022.

They said the asteroid was first captured by Catalina’s telescope and, after four observatio­ns over a period of about half an hour, it was reported to the Minor Planet Centre.

“These four observatio­ns were enough to map out the asteroid’s path in the sky, ”they said, adding that – within a few minutes of the data being published – ESA’s own internal monitoring software had suggested the object was likely to hit somewhere in North America in the following two to three hours.

“Following the potential impact notificati­ons, observers at Catalina and elsewhere across the US got follow-up observatio­ns of the new asteroid. Less than 30 minutes from the initial trigger, the impact was confirmed with excellent precision: the small asteroid, likely less than a metre in diameter, was going to impact somewhere between Lake Erie and Lake Ontario, near the US-Canada border.”

It was predicted to impact between about 8.30 and 9.30am UK-time. “At exactly the predicted time, a ~1-metre asteroid struck the atmosphere becoming a brilliant fireball above the expected location,” they said.

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