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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.
March – 2029 Special Olympics World Winter Games in Switzerland. April 13 – Asteroid 99942 Apophis, at 335 metres (1,100 feet) wide, will pass Earth less than 32,000 kilometres (20,000 miles) from Earth's surface: closer than geosynchronous satellites. When discovered, it was considered a serious threat to Earth, but since then refined ...
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 ...
Asteroid impact prediction is the prediction of the dates and times of asteroids impacting Earth, along with the locations and severities of the impacts. The process of impact prediction follows three major steps: Discovery of an asteroid and initial assessment of its orbit which is generally based on a short observation arc of less than 2 weeks.
The point is that Venus will come closer to Earth in 2036 than Apophis will. The orbit of Apophis is that well known. The uncertainty region for Apophis on 27 March 2036 is only ±130,000 km and Apophis will be 0.309 AU (46.2 million km; 120 LD) from Earth. Venus will be 0.288 AU from Earth in May 2036.
By March 2022, the rating had been reduced to −2.0. [ 7 ] [ 8 ] As of October 2024, it has a rating of −0.93. For a brief period in late December 2004, with an observation arc of 190 days, asteroid 99942 Apophis (then known only by its provisional designation 2004 MN 4 ) held the record for the highest Palermo scale value, with a value of 1 ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 10 January 2025. This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources. The Last Judgment by painter Hans Memling. In Christian belief, the Last Judgement is an apocalyptic event where God makes a final ...
In 2020, astronomers confirmed Yarkovsky acceleration of the asteroid 99942 Apophis. The findings are relevant to asteroid impact avoidance as 99942 Apophis was thought to have a very small chance of Earth impact in 2068, and the Yarkovsky effect was a significant source of prediction uncertainty.