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The day the asteroid could hit | Human world



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  Line drawing of the asteroid orbit in the inner solar system.

Hypothetical orbit for the fictional asteroid 2019 PDC over the ESA.

The European Space Agency (ESA) said late last week that it would be reporting on an asteroid made great international asteroid action exercise live on social media from April 29 to May 3, 201

9. You can Watch coverage of the @ esaoperations Twitter channel . It is an exercise – similar to the tornado drilling that some of us have undergone in elementary school – but in this case it was carried out by scientists, space agencies, and civil protection organizations, all of which acted as if Asteroid is heading for an impact on Earth. This exercise – simulating a fictional but plausible asteroid impact – is conducted every two years by asteroid experts around the world. It is headed by the Planetary Defense Conference in Washington, DC, ESA. The ESA said:

During the week-long scenario, participants took on roles such as "national government," "space agency," "astronomer," and "civil defense agency." I do not know how the situation will evolve from one day to the next , and must create plans based on the daily updates.

Follow the live coverage from April 29th to May 3rd via @esaoperations on Twitter

You can also participate more restrictedly via the ESA Facebook page. There are two livestream videos shown directly from the Planetary Defense Conference. The first one will be today (Sunday, April 28) at 12 UTC (2:00 pm CEST, 8:00 am CEST, UTC translates into your time) with Rüdiger Jehn, Head of the ESA Department of Planetary Defense. The second is Thursday, the 2nd of May, around the European time in the afternoon.

Livestream Videos from the Planetary Defense Conference on the ESA Facebook Page

For more information about the asteroid impact scenario, see "Rolling Reporting: Brace for Hypothetical Asteroid Impact." Start with the first day of the conference. Monday, April 29th.

Follow ESA's ongoing reporting: Daily updates to the asteroid scenario.

The label "2019 PDC". NOTE : Although realistic, all "objects" and "events" described below are completely fictitious, describing NOT an actual asteroid impact. ESA described the fictional scenario as follows:

– An asteroid was discovered on March 26, 2019, and named 2019 PDC by the Minor Planet Center of the International Astronomical Union (IAU).

– Initial calculations suggest that the orbit of PDC in 2019 will bring it within 7.5 million km [4.6 million miles] of Earth orbit. (Or within 0.05 AU of Earth orbit.)

. – 2019 PDC moves in an eccentric orbit and extends farthest from the Sun (2.94 AU) (in the middle of the asteroid belt) and at 0.94 AU it is the closest. Every 971 days (2.66 years) a full orbit around the sun is completed. Take a closer look at the orbit here.

– The day after the discovery of the PDC (2019), the ESA and NASA Impact Monitoring Systems will identify several future dates when the asteroid could hit Earth. Both systems agree that on April 29, 2027, in more than eight years, the asteroid is most likely to strike with a very low probability of an impact of about 1 in 50,000.

– When first discovered, asteroid 2019 PDC was about 57 million km [35.4 million miles] from Earth, 0.38 astronomical units [0.38 of the average Earth-sun distance]. It was about 14 km / s [8.7 miles/sec] on the way and became brighter.

– Continuing observations increase the likelihood of collision in 2027. Three weeks after the discovery, after the observations were interrupted during the full moon (and visibility was reduced), the probability of an impact increased to 0.4 percent – this is a 1: 250 chance.

  Google Earth image of the earth with a red line shown in the center of the USA: The

Enlarge. | Graph showing the hypothetical impact corridor of the hypothetical asteroid 2019 PDC when its orbit is not yet fully known. The ESA said, "The asteroid's uncertainty range at the time of the potential impact is much longer than the diameter of the Earth, but its width is only about 70 kilometers. The intersection of the uncertainty region with the earth creates a so-called "risk corridor" above the Earth's surface. The corridor spans half of the earth, stretching from Hawaii at the western end, across the US and the Atlantic Ocean to central and southern Africa at the eastern end. The red dots on the Google Earth image trace the risk corridor. "Picture about the ESA.

– Very little is known about the physical properties of the asteroid. According to experts, the average size of the asteroid can be between 100 and 300 meters [approximately 300 to 1,000 feet].

– Asteroid 2019 PDC approached Earth more than a month after its discovery, reaching its next point on May 13. Unfortunately, the asteroid was too far away to be discovered, and it is not expected to be near Earth by 2027, the year of the impact.

– As astronomers continue to follow the PDC 2019, the likelihood of an impact continued to increase. By April 2019, the first day of the Planetary Defense Conference, the likelihood of an impact has risen to 1 in 100.

This exercise will be conducted by NASA's Planetary Defense (NASA) Coordinator, in collaboration with the American Emergency Management Agency (FEMA) at the 2019 Planetary Defense Conference in Washington, DC. The conference is strongly supported by ESA, NASA and other agencies, organizations and scientific institutions.

Follow the live tweets from April 29 to May 3 via @esaoperations on Twitter

Watch the live stream videos of the Planetary Defense Conference via the ESA Facebook Page [19659009]on. Daily updates to the scenario with asteroid impacts.

Read more from the ESA: The Day the Asteroid Could Meet

Conclusion: At the Planetary Defense Conference in Washington, DC on April 29, May 3 2019 – Scientists, space agencies and civil defense organizations will act as if is heading for an asteroid in one fell swoop with Earth. This exercise – simulating a fictional but plausible asteroid impact – is conducted every two years by these asteroid experts. This story tells how to follow the exercise in social media.

  Deborah Byrd


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