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ALT 99942 Apophis is a near-Earth asteroid and a potentially hazardous object, 450 metres (1,480 ft) by 170 metres (560 ft) in size, that caused a brief period of concern in December 2004 when initial observations indicated a probability of 2.7% that it would hit Earth on Friday, 13 April 2029. Additional observations provided improved predictions that eliminated the possibility of an impact on Earth or the Moon in 2029.
ALT The average distance between the Earth and the Moon is 239,000 miles and NASA reports that the asteroid 99942 Aposphis will be just 38,012 KM or 23,619 miles away from the Earth on April 14, 2029. Hence, it would be 10 times closer than the moon, and moving with a speed of 29.98 KM per second.
ALT Apophis is a near-Earth asteroid that will make a very close approach to Earth on April 13, 2029, when it will pass less than 32,000 km (20,000 miles) from Earth’s surface, just inside the orbiting distance of geosynchronous satellites. Planetary scientists have observed this object and determined that it is not likely to hit Earth in the coming decades.
ALT Instead of moving the asteroid on its potential resonant return to Earth, Shengping Gong and his team believe the secret is shifting the asteroid away from entering the gravitational keyhole in the first place. In October 2022, a method was proposed for mapping the interior of an asteroid of concern, such as 99942 Apophis, in order to determine the optimal location for a kinetic impact.
