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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, April 13, 2029.
Assuming a two-dimensional Gaussian probability distribution in the plane perpendicular to the asteroid's orbit (the B-plane), the uncertainty can be characterized by the standard deviation (sigma) the close approach point in the directions along the asteroid's orbit and perpendicular to it, where the former is usually much larger.
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 ...
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.
While the asteroid Apophis won’t hit Earth, two spacecraft may tag along. ... When a cruise liner-size asteroid comes within 19,883 miles (32,000 kilometers) of Earth on April 13, 2029, it won ...
In 2020, animation studio Kurzgesagt released the app Universe in a Nutshell, which took inspiration from The Scale of the Universe. [10] [11] The main-belt asteroid 10003 Caryhuang was officially named by the International Astronomical Union on June 16, 2021, partly in recognition of Cary Huang's involvement in The Scale of the Universe. [2]
The Palermo scale was devised for astronomers to compare impact hazards at a technical level, rather than for the general public. [2] It was adopted at the meeting of the Working Group on Near-Earth Objects of the Scientific and Technical Subcommittee of the United Nations Committee on the Peaceful Uses of Outer Space which was held in Palermo, Italy, on June 11–16, 2001.
The close approach of the asteroid Apophis to the Earth and Moon on Friday, April 13, 2029. Ramses, or Rapid Apophis Mission for Space Safety, is a proposed European Space Agency (ESA) mission to a near-Earth asteroid 99942 Apophis. If approved, it is expected to be launched in April 2028 and to arrive at Apophis in February 2029 before its ...