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99942 Apophis (provisional designation 2004 MN 4) is a near-Earth asteroid and a potentially hazardous object, 450 metres (1,480 ft) by 170 metres (560 ft) in size, [3] 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.
These images represent radar observations of Apophis on March 8, 9 and 10, 2021, as it made its last close approach before its 2029 Earth encounter. The data ruled out any chance of Earth impact ...
But radar observations have suggested that Apophis is shaped roughly like a peanut – a relatively common shape among near-Earth asteroids larger than 660 feet in diameter, according to NASA.
Delay-Doppler radar images of 1996 FG 3 and its moon from Arecibo Observatory in 2011. ... Mean motion. 0° 54 m 39.6 s / day ... (one of them is 99942 Apophis), ...
In a bit of ominous news befitting a Friday the 13th: It turns out that the asteroid Apophis could have a very small chance of colliding into Earth in five years, when it is expected to make a ...
Ramses, or Rapid Apophis Mission for Space Safety, is a proposed ESA mission to a near-Earth asteroid 99942 Apophis.If approved, it is expected to be launched in April 2028, to arrive at Apophis in February 2029, before its closest approach to Earth.
Radar Observations Refine the Future Motion of Asteroid 2004 MN4 (NASA News 149 : February 3, 2005) Transferred from to Commons by Sreejithk2000 using CommonsHelper. (Original text: Created by me manually to copy :Image:2004mn4d4_s.gif.) Author: Marco Polo
On December 24, 2004, 370 m (1,210 ft) asteroid 99942 Apophis (at the time yet unnamed and therefore known only by its provisional designation 2004 MN 4) was assigned a 4 on the Torino scale, the highest rating given to date, as the information available at the time translated to a 1.6% chance of Earth impact in April 2029. [90]