Asteroid tsunami: Scientist’s dire warning to US coast over ocean impact

“It’s April 12, 2029, and if it threads the keyhole it will hit Earth on April 13, 2036.”

Despite his claims, the keyhole has since been determined to be less than 600 metres wide, meaning the possibility of Apophis passing through it is extremely unlikely.

In 2008, NASA reaffirmed the chance of Apophis impacting Earth in 2036 as being 1 in 45,000.

However, in February 2014, the odds of an impact on April 12, 2068, were calculated by the JPL Sentry risk table as 1 in 150,000.