Sunday , June 16 2019
Home / australia / USA Map shows that the meteorite landed in the Great Australian Bay

USA Map shows that the meteorite landed in the Great Australian Bay

NASA's center, which studies asteroids and meteors, has captured data showing where the meteorite hit and how much energy it produced.

Data from the Center for the Study of Objects near Earth in California show a meteor landing site as a reasonably large blue-green dot on their map of announced fireballs as they are scanned by US sensors.

After reaching a speed of 44,100 km / h as it entered the Earth's stratosphere, it burnt and fell apart, some parts landing about 300 km west-southwest of Gambier Mountain in the Great Australian Bay on Tuesday.

media_cameraFireball over Adelaide CBD. Image: 9 News

Professor Phil Bland of Curtin University said that "the energy stored in our atmosphere when the thing exploded, 1.6 kilotonnes" was impressive.

"That's very high," he said.

"It is within the reach of a small nuclear weapon. Since it exploded at an altitude of 31.5 km, it did no harm. "

NASA Aviation Engineer Steve Chesley told ABC Radio that the object could be the size of a small car or a large couch when it entered the atmosphere, but the high pressure caused it to disintegrate and "small pieces of fist or larger" could be brought to the surface like meteorites.

"You wouldn't want you to come to your head," he said. "But this wouldn't really hurt the ground.

"What people saw along the coast of South Australia was a spectacular light show, probably a very loud sound boom that would fool the windows, not big enough to break the windows I expected, and then just the small pebbles falling into the Earth hypersonic speeds, slow down very quickly. "

The meteor reached "peak brightness" at an altitude of 31.5 km, at 11.5 km per second, with a total impact energy of 1.6 kilotons above water to our south.

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

The center calculates high-precision orbits for near-earth objects such as asteroids or meteoroids to support NASA's Planetary Defense Coordination Office.

media_cameraThe fireball, shown by a green-blue dot, landed in the Great Australian Bay. Figure: Center for Studies of Near Countries

This then predicts how close they could come to Earth and the possibility of impact.

On this website, continually updated orbital parameter calculations, near approaches, impact risks, survey statistics, and possible asteroid mission suggestions are available to people.

The Center is home to the Sentry Laboratories Impact Tracking System, which conducts long-term analyzes of potential future paths of dangerous asteroids looking for impact in the next century.

media_cameraFireballs reported since 1988. Figure: Center for Studies of Near Earth Objects

The Scout System also monitors new potential asteroid discoveries and calculates the possible range of future movements before these objects are confirmed as discoveries.

Hypothetical impact scenarios are created for use in planetary defense conferences and similar exercises at other meetings.

Source link