REPUBLIKA.CO.ID, JAKARTA — About 66 million years ago, the Earth was struck by a asteroid the size of a city that releases energy equivalent to the explosion of a 72 trillion ton bomb. This created a 100-mile-wide (180-kilometer) collision scar that is now Mexico’s Yucatán Peninsula.
This asteroid impact, known as the Chicxulub impact, caused the mass extinction of dinosaurs along with about three-quarters of other species in an event known as the Cretaceous-Paleogene extinction. In an effort to prevent similar collisions in the future, NASA’s Center for Near Earth Object Studies (CNEOS) is running an impact monitoring system called Sentry.
Sentry continues to conduct long-term analysis of potentially hazardous asteroids. Reported Live Science on Monday (13/11/2023), here are five asteroids that are considered to pose the greatest risk to Earth, although there may still be other asteroids that have not been detected.
1. Bennu (101955 Bennu, 1999 RQ36)
Size: 0.30 miles (0.49 kilometers)
Mass: 74 million tons (67 million metric tons)
Discovered in September 1999, Bennu is one of the asteroids that has the greatest potential to pose a risk to Earth. On September 24, 2182, Bennu is estimated to have a 0.037 percent or one in 2,700 chance of hitting Earth. In preparation, OSIRIS-REx NASA has returned samples from Determine on September 24, 2023, for further research. Bennu’s impact on Earth has the potential to cause regional damage with energy equivalent to an explosion of 1.4 billion tons of TNT and possibly millions of deaths, if it hits a densely populated area.
2. 29075 (1950 AD)
Size: 0.81 miles (1.3 kilometers)
Mass: 78 million tons (71 metric tons)
Asteroid 29075 (1950 DA) is thought to have a 0.0029 percent chance, or one in 34,500, of hitting Earth on March 16, 2880. A 1950 DA impact could release energy equivalent to 75 billion tons of TNT, potentially creating a global catastrophe that threatens humanity.
3. TL4 2023
Size: 0.20 miles (0.33 kilometers)
Mass: 47 million tons (43 million metric tons)
The asteroid 2023 TL4, discovered in 2023, has a 0.00055 percent, or one in 181,000 chance of hitting Earth on October 10, 2119. The impact of 2023 TL4 has the potential to release energy equivalent to the explosion of 7.5 billion tons of TNT.
4.FT3 2007
Size: 0.21 miles (0.34 kilometers)
Mass: 54 million tons (49 million metric tons)
2007 FT3, which was last seen in 2007, is estimated to have a 0.0000096 percent, or one in 10 million, chance of hitting Earth on March 3, 2030. FT3’s impact on Earth has the potential to create major regional damage with the energy equivalent of an explosion of 2.6 billion tons of TNT.
5. 1979 XB
Size: 0.41 miles (0.66 kilometers)
Mass: 390 million tons (354 metric tons)
Asteroid 1979
Additionally, asteroid 99942 Apophis (despite its worrying history) has been removed from the Sentry Risk list, as recent observations indicate that there is no significant risk for the next 100 years. Although these asteroids pose a potential risk, they have not ranked highly on the Torino Impact Hazard Scale which measures the risk of an asteroid impact.
Currently, there is no known threat of significant impact over the next hundred years. CNEOS continues to search for potentially dangerous asteroids.
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2023-11-13 06:20:02
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