![]() RELATED: DART NASA: Spacecraft successfully slams into an asteroid All other objects rank at 0 on the Torino scale. The latter tracks potential collisions with celestial objects.īut the space rock - named 2023 DW - is the only object on NASA's risk list that ranks 1 out of 10 on the Torino Impact Hazard Scale, a metric for categorizing the projected risk of an object colliding with Earth. The asteroid has a 1 in 625 chance of striking Earth, based on data projections from the European Space Agency, though NASA's Jet Propulsion Laboratory's Sentry system calculated the odds closer to 1 in 560. The DART mission, or the Double Asteroid Redirection Test, launched 10 months ago.ĬHICAGO - A newly discovered asteroid roughly the size of an Olympic swimming pool has a "small chance" of colliding with Earth in 23 years, with a potential impact on Valentine's Day in 2046, according to NASA's Planetary Defense Coordination Office. ET greeted by cheers from the mission team in Laurel, Maryland. “Continued observations of this object ruled out any chance of impact, and these new ranging measurements by the planetary radar team will further refine exactly where it will be far into the future.The impact occurred at 7:15 p.m. “Interestingly, shortly after its discovery, 2011 AG5 became a poster-child asteroid when our analysis showed it had a small chance of a future impact,” said Paul Chodas, the director for CNEOS at JPL. Asteroid 2011 AG5 orbits the Sun once every 621 days and won’t have a very close encounter with Earth until 2040, when it will safely pass our planet at a distance of about 670,000 miles (1.1 million kilometers, or nearly three times the Earth-Moon distance). Radar provides precise distance measurements that can help scientists at NASA’s Center for Near Earth Object Studies ( CNEOS) refine the asteroid’s orbital path. The observations also confirmed 2011 AG5 has a slow rotation rate, taking nine hours to fully rotate.īeyond contributing to a better understanding of what this object looks like up close, the Goldstone radar observations provide a key measurement of the asteroid’s orbit around the Sun. And if the asteroid were viewed by the human eye, it would appear as dark as charcoal. 4, capturing several other details: Along with a large, broad concavity in one of the asteroid’s two hemispheres, 2011 AG5 has subtle dark and lighter regions that may indicate small-scale surface features a few dozen meters across. The Goldstone radar observations took place from Jan. ![]() “Of the 1,040 near-Earth objects observed by planetary radar to date, this is one of the most elongated we’ve seen,” said Lance Benner, principal scientist at JPL who helped lead the observations. The powerful 230-foot (70-meter) Goldstone Solar System Radar antenna dish at the Deep Space Network’s facility near Barstow, California, revealed the dimensions of this extremely elongated asteroid. This close approach provided the first opportunity to take a detailed look at the asteroid since it was discovered in 2011, revealing an object about 1,600 feet (500 meters) long and about 500 feet (150 meters) wide – dimensions comparable to the Empire State Building. While there was no risk of the asteroid – called 2011 AG5 – impacting our planet, scientists at NASA’s Jet Propulsion Laboratory in Southern California closely tracked the object, making invaluable observations to help determine its size, rotation, surface details, and, most notably, shape. 3, an asteroid more than three times as long as it is wide safely flew past Earth at a distance of about 1.1 million miles (1.8 million kilometers, or a little under five times the distance between the Moon and Earth). ![]()
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