A Sunlight Shifted Asteroid Might Hit the Earth in 2068 with a 1200 Megaton Impact

A Sunlight Shifted Asteroid Might Hit the Earth in 2068 with a 1200 Megaton Impact
A Sunlight Shifted Asteroid Might Hit the Earth in 2068 with a 1200 Megaton Impact

Brian Wang |
November 15, 2020 |

Dave Tholen and collaborators have detected light from the sun is moving the 300 meter near-Earth asteroid Apophis by 170 meters per year. This acceleration means that Apophis might hit the earth in 2068.

Detailed analysis on the next close pass in 2029 will determine if Apophis is a risk.

The Sentry Risk Table estimates that Apophis would impact Earth with kinetic energy equivalent to 1,200 megatons of TNT.

The highest probability of impact is on April 12, 2068 and the odds of an impact on that date, as calculated by the JPL Sentry risk table using a March 2016 solution, are 1 in 150,000. The calculations are that it should miss the Earth by 150 million kilometers. The acceleration should only shift the asteroid by about 122 kilometers.

Assuming Apophis is a 370-meter-wide (1,210 ft) stony asteroid with a density of 3,000 kg/m3, then if it were to impact into sedimentary rock, Apophis would create a 5.1-kilometer (17,000 ft) impact crater.

A deep-water impact in the Atlantic or Pacific oceans would produce an incoherent short-range tsunami with a potential destructive radius (inundation height of about 2 meters) of roughly 1,000 kilometers (620 mi) for most of North America, Brazil and Africa, 3,000 km (1,900 mi) for Japan and 4,500 km (2,800 mi) for some areas in Hawaii.

SOURCES- Wikipedia, University of Hawaiʻi Institute for Astronomy, Sentry Risk Table, B612 Foundation
Written By Brian Wang, Nextbigfuture.com

Print Friendly, PDF & Email

Read next:

« Best Cities to Connect With Boring Company Loops

XL subscribe to our newsletter banner

Get the latest news and advice on COVID-19, direct from the experts in your inbox. Join hundreds of thousands who trust experts by subscribing to our newsletter.

Send your news and stories to us news@climaxradio.co.uk or newstories@climaxnewsroom.com and WhatsApp: +447747873668.

Before you go...

Democratic norms are being stress-tested all over the world, and the past few years have thrown up all kinds of questions we didn't know needed clarifying – how long is too long for a parliamentary prorogation? How far should politicians be allowed to intervene in court cases? To monitor these issues as closely as we have in the past we need your support, so please consider donating to The Climax News Room.

Leave a Reply