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99942 Apophis (provisional designation 2004 MN 4) is a near-Earth asteroid and a potentially hazardous object with a diameter of 370 metres (1,210 feet) that caused a brief period of concern in December 2004 when initial observations indicated a probability up to 2.7% that it would hit Earth on April 13, 2029.
Asteroid 99942 Apophis is a near-Earth object (NEO) estimated to be about 1,100 feet (335 meters) across. When it was discovered in 2004, Apophis was identified as one of the most hazardous asteroids that could impact Earth.
Mar 26, 2021 · After its discovery in 2004, asteroid 99942 Apophis had been identified as one of the most hazardous asteroids that could impact Earth. But that impact assessment changed as astronomers tracked Apophis and its orbit became better determined.
On 13 April 2029, the asteroid 99942 Apophis will pass less than 32 000 km from Earth’s surface. Roughly 375 m across on average, Apophis will, for a short time, be closer to Earth than telecommunications satellites in geostationary orbit and visible in the night sky to the naked eye from parts of Europe, Africa and Asia.
Mar 26, 2021 · These images represent radar observations of asteroid 99942 Apophis on March 8, 9, and 10, 2021, as it made its last close approach before its 2029 Earth encounter that will see the object pass our planet by less than 20,000 miles (32,000 kilometers).
Dec 14, 2022 · Apophis is an asteroid that became notorious in 2004 as a potential threat to Earth. Also known as asteroid 99942, the near-Earth object is estimated to be about 1,100 feet (340 meters) across...
Researchers at NASA/JPL, Caltech, and Arecibo Observatory have released the results of radar observations of the potentially hazardous asteroid 99942 Apophis, along with an in-depth analysis of its motion.
May 5, 2022 · NASA Spacecraft Will Visit Apophis, Once Earth’s Deadliest Asteroid Threat. After delivering extraterrestrial samples to Earth in 2023, OSIRIS-REx will embark on an extended mission to a...
Jan 9, 2013 · Catalogued as asteroid (99942) Apophis (previously 2004 MN4), it is often nicknamed ‘the doomsday asteroid’ in popular media, after initial observations made after its discovery in 2004 gave it a 2.7% chance of striking Earth in April 2029.
Feb 15, 2023 · Jet Propulsion Laboratory scientists Lance Benner, Paul Chodas and Mark Haynes are studying the 1,100-foot wide asteroid Apophis, which will come within viewing distance of Earth on April 13,...
