Wednesday , January 27 2021

The US map shows a meteorite that has landed in the Great Australian Bight

The NASA center studying asteroids and meteors has captured data showing where the meteorite landed, and how much energy it produced.

Data from the Center for Anti-Earth Object Studies in California shows the meteorite landing site as a fairly large blue-green dot on their map of reported fireballs, as identified by US sensors.

After reaching a speed of 44,100km / h when it entered the Earth's stratosphere, it burned and cut up, with some parts landing about 300km to the west-southwest of Mount Gambier in the Great Australian Bight on Tuesday.

media_cameraThe fire ball over the Adelaide CBD. Photo: 9 News

Professor Phil Bland of Curtin University said “the energy deposited in our environment when it exploded, 1.6 pilots” was impressive.

“That's very high,” he said.

“It is in the range of a small nuclear weapon. Because it had exploded at a height of 31.5km, it did not damage. ”

NASA aerospace engineer, Dr Steve Chesley, told ABC Radio that the object could have been how many small cars or a large sofa when he entered the atmosphere, but a high pressure caused him to break up. up and “small pieces fist size or more” could make their way to the surface like meteorites.

“You wouldn't want him to land on your head,” he said. “But these wouldn't do any damage on the ground.

“What the people there said along the South Australian coast was a spectacular light show, a very high sonic boom, which might be hanging the windows, this wasn't big enough to break windows. expect, and then only small pebbles that fall to the Earth and not at impersonal speed, they slow down our very fast. ”

The meteor reached “top brightness” at a height of 31.5km, traveling at 11.5 kilometers per second, with total effect energy calculated 1.6 kilometers over the water to the south.

By comparison, the nuclear bomb that exploded over Hiroshima was 15 kilometers.

The center compresses high precision orbits for objects in the ground such as asteroids or meteoroids to support the NASA Planet Protection Co-ordination office.

media_cameraThe fire ball, shown by the blue-blue dot, landed in the Great Australian Bight. Image: Center for Near Earth Objects Studies

Then we predict how close they could come to the Earth and the possibility of having an effect.

“Calculations have been continuously updated from orbital parameters, close approaches, impact risks, discovery statistics, and mission designs to accessible asteroids to people are available on this website,” he said.

The Center is home to the Jet Drive Laboratory sentry impact monitoring system, which performs long-term analyzes of future orbital asteroids, looking for potential impacts over the next century.

media_cameraFireballs have reported since 1988. Image: Center of Studies Near Earth Objects

A scout system also monitors new discoveries of possible asteroids and compresses the possible range of future proposals even before these objects are confirmed as finds.

Theoretical impact scenarios will be developed for use at the Planetary Protection Conferences and similar exercises at other meetings.

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