Search results
Results from the WOW.Com Content Network
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, April 13, 2029.
The asteroid's provisional designation as a minor planet, "2024 YR 4", was assigned by the Minor Planet Center when its discovery was announced on 27 December 2024. [2] The first letter, "Y", indicates that the asteroid was discovered in the second half-month of December (16 to 31 December), and "R 4" indicates that it was the 117th provisional designation to be assigned in that half-month.
The estimated size of this asteroid ranges from about 40 to 90 meters. ... While on the lower end of the scale, with about 40 meters, it would be threatening to, let's say, a middle-sized city, on ...
The asteroid 2024 YR4 has a very small chance of ... and in all likelihood 2024 YR4 will not pose threats to our world. ... If researchers find its actual size to be nearer the top end of that ...
The bottom of this size range, 20 m (66 ft) corresponds to the average size of an asteroid with the smallest impact energy (1 megaton) considered for impact hazard ratings on the Torino scale. [ 12 ] 20 m (66 ft) is also about the size of the Chelyabinsk meteor , which produced a meteor ending in an airburst briefly brighter than the Sun that ...
At the highest threat, the asteroid only had about a 3% chance of hitting Earth, which was the highest impact probability NASA has ever recorded for an object of this size. The last record holder ...
A top view of asteroid group location in the inner solar system A map of planets and asteroid groups of the inner solar system. Distances from sun are to scale, object sizes are not. Various dynamical groups of asteroids have been discovered orbiting in the inner Solar System.
By comparison, the asteroid that ended the age of the dinosaur is estimated to be between six and nine miles wide. However, astronomers say the odds of a collision are around 1-in-83.