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  2. 99942 Apophis - Wikipedia

    en.wikipedia.org/wiki/99942_Apophis

    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.

  3. Asteroid Apophis has the tiniest chance of hitting earth in ...

    www.aol.com/asteroid-apophis-tiniest-chance...

    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 ...

  4. List of predicted asteroid impacts on Earth - Wikipedia

    en.wikipedia.org/wiki/List_of_predicted_asteroid...

    This is a list of asteroids that have impacted Earth after discovery and orbit calculation that predicted the impact in advance. As of December 2024, all of the asteroids with predicted impacts were under 5 m (16 ft) in size that were discovered just hours before impact, and burned up in the atmosphere as meteors.

  5. Asteroid impact prediction - Wikipedia

    en.wikipedia.org/wiki/Asteroid_impact_prediction

    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.

  6. A cruise liner-size asteroid will come closer to Earth than ...

    www.aol.com/why-two-missions-targeting-same...

    Apophis is of interest because it’s an S-type, or stony, asteroid — different from other space rocks visited by NASA missions, including Bennu, which is a C-type, or carbonaceous, asteroid.

  7. Yarkovsky effect - Wikipedia

    en.wikipedia.org/wiki/Yarkovsky_effect

    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.

  8. 18 terrible things that happened on Friday the 13th - AOL

    www.aol.com/news/18-terrible-things-happened...

    The asteroid was named 99942 Apophis. Vadim Sadovski/Shutterstock. According to NASA, an asteroid, 99942 Apophis., will come within 20,000 miles of the Earth on April 13, 2029.

  9. Torino scale - Wikipedia

    en.wikipedia.org/wiki/Torino_scale

    The Torino scale is a method for categorizing the impact hazard associated with near-Earth objects (NEOs) such as asteroids and comets.It is intended as a communication tool for astronomers and the public to assess the seriousness of collision predictions, by combining probability statistics and known kinetic damage potentials into a single threat value.