When the 2019 asteroid OK was suddenly spotted on its way to Earth on July 25, 2019, it surprised scientists, but now the data Collected by the Arecibo Radio Observatory, the secret of this elusive asteroid has been revealed.
After receiving the warning, radar scientists focused on an asteroid coming from the Earth's blind spot (opposite the sun). Due to the asteroid's high speed, Luisa Fernanda Zamberano-Marin and her team only had 30 minutes to get as much radar information as possible from this surprising object.
The asteroid made headlines because It seemed to have come from nowhere and was moving rapidly towards the earth. But Zamberano-Marin's findings, published June 10 (June 20) in the Journal of Planetary Science and just weeks before asteroid Day on June 30, raise global awareness to help educate the public about these potential threats. "This asteroid was a real challenge and nobody saw it until it was actually passing by Earth, so when we received the warning, it "We had very little to react to."
Studies have shown that the asteroid was between 60 and 120 meters in diameter and rotated very fast for 3 to 5 minutes. This shows that the asteroid OK 2019 is known to be only 4.2% of fast-rotating asteroids. According to researchers, this growing group needs more attention.
data suggest that the asteroid may be either type C, which is made up of clay and silicate rocks, or type S, which includes It becomes silicate and nickel-iron. Type C asteroids are among the most common and oldest asteroids in the solar system, and Type S is the second largest group. Is. Although the observatory telescope crashed and was destroyed in 2020, the planetary radar team can still use the existing database, which spans four decades. Scientific operations in the field of space and atmospheric sciences are also underway at the observatory, and staff are renovating 12-meter antennas to continue astronomical research.
And compare them to the observations we have made here over the last 40 years. "Radar data not only helps to validate information from optical observations, but also provides us with information in the field of identifying physical and dynamic properties, which in turn will increase our insight into appropriate asteroid deflection methods if needed." According to the Center for Near-Earth Studies, there are approximately 30,000 known asteroids, and while a small number of them are an immediate threat, it is likely that an asteroid of significant size will hit the Earth and cause damage. It's catastrophic.
That's why NASA tracks such objects as soon as they find them, and monitors them closely to identify and identify them. The agency and other space agencies in different countries have launched missions to explore near-Earth asteroids to better understand what these objects are made of and where they are moving, and whether they are likely to change direction toward Earth in the future.>
For example, the OSIRIS REx mission, which returns to Earth with an example of the asteroid Bennu, which surprised scientists. Benno was first observed by the Arecibo Radio Telescope in 1999.
A new mission called NASA's Double asteroid Redirection Test or DART is aimed at Demonstrate the ability to change the direction of an asteroid using collisional kinetic energy. The spacecraft was launched in November 2021 and is expected to reach its destination, the asteroid Dimorphos, on September 26, 2022.
These missions are still underway with Zambrano Marin and other members of the Arecibo team. They are looking to provide more information about the types of asteroids in the solar system to the scientific community to help with possible future plans.
Cover Photo: Graphic Design of an asteroid
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