3 dangerous asteroids careening towards Earth today, NASA warns; biggest is a 390-foot monster

Three giant asteroids, namely 2005 RX3, 2022 QB37 and 2022 SB, are heading towards Earth today. While one is a monster at 390 feet, which is the size of a building, another is 180 feet, which is the size of an airplane. Are they dangerous? Find out here.

Sunday September 18th will be quite dangerous for planet earth! Do you want to know why? Three giant asteroids, namely 2005 RX3, 2022 QB37 and 2022 SB, are heading towards our planet today. Asteroid 2005 RX3 is the largest of them all, measuring 390 FT (size of a building). Its closest approach to Earth will be 2,950,000 miles. The 2022 QB37 is airplane-sized (180 FT) and will approach 4,080,000 miles. Asteroid 2002 SB is the smallest of them all, being the size of a bus (36 FT). How close will this asteroid get to Earth? Frighteningly, its closest approach to the planet will be only 7.24,000 miles. That’s way too close for comfort. Just compare it to the Moon’s distance from Earth, which is 238,855 miles. Yes, the asteroid will be closer to Earth than the moon.

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How dangerous are these asteroids for our planet?

According to NASA’s Jet Propulsion Laboratory, all three asteroids will zoom past Earth on Sunday, causing no damage or threat to the planet. According to JPL, an object larger than about 150 meters and capable of approaching to within 7.5 million kilometers of the Earth, or 19.5 times the distance to the moon, is designated as a potentially dangerous object.

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Potentially hazardous asteroids (PHAs) are currently defined based on parameters that measure the asteroid’s potential to make an ominously close approach to Earth. According to the Center for Near Earth Object Studies, asteroids that can come no closer to Earth (ie MOID) than 0.05 AU (about 7,480,000 km or 4,650,000 mi) or smaller than about 150 m (500 ft) in diameters (ie H=22.0 with assumed albedo of 13%) are not considered PHAs.

It may also be noted that the potential of approaching close to Earth does not mean that a PHA will hit Earth. It just means that such a threat is possible. By monitoring these PHAs and updating their orbits as new observations become available, the research organization can predict the statistics of the close proximity and hence their threat of an Earth impact.

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The technology behind the science: How NASA studies and tracks asteroids near and far

Surveys conducted by NASA-supported ground-based telescopes — including Pans-STARRS1 in Maui, Hawaii, and the Catalina Sky Survey near Tucson, Arizona — have identified thousands of near-Earth objects. And a space-based telescope called NEOWISE has identified hundreds of others while scanning the sky at near-infrared light wavelengths from its polar orbit around Earth. Many ground-based telescopes perform follow-up observations to further aid in orbit calculations and to study the objects’ physical properties. From chips to software, these gadgets contain the best technologies of the day they were built.

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