Mini-Moon Alert: Asteroid 2024 PT5 to Orbit Earth This Fall
September 17, 2024
- A small asteroid named '2024 PT5' is set to orbit Earth from late September to late November 2024. 
- Discovered on August 7, this asteroid was identified using the Asteroid Terrestrial-impact Last Alert System (ATLAS), a NASA-funded initiative with telescopes located in Hawaii, Chile, and South Africa. 
- Astrophysicist Federica Spoto from the Harvard-Smithsonian Center for Astrophysics described the upcoming capture of 2024 PT5 as 'pretty cool'. 
- Mini-moon events, like the one involving 2024 PT5, can be categorized into long episodes lasting years and short engagements that last weeks or months. 
- Due to its size and distance, 2024 PT5 is unlikely to be visible to the naked eye, but NASA offers a virtual asteroid tracker for real-time monitoring. 
- NASA has increased its focus on asteroid threats in recent years, recognizing that these celestial bodies are remnants from the solar system's formation approximately 4.6 billion years ago. 
- In 2023, NASA allocated $90 million for near-Earth object detection efforts, supporting projects like the Sutter Ultra and the NEOsurveyor infrared telescope. 
- Monitoring of asteroids has intensified since the 1990s, with telescopes being utilized to observe and track moving objects in the night sky. 
- The alert regarding 2024 PT5 also includes four additional asteroids, three of which are house-sized and one building-sized. 
- It is relatively rare for asteroids to come close to Earth, as most pass by at a distance, with few entering the atmosphere or causing impact craters. 
- The case of 2024 PT5 exemplifies the importance of global collaboration in accurately tracking small asteroids. 
- A mini-moon is defined as an object caught in Earth's orbit due to its gravitational pull, similar to how satellites operate. 
Summary based on 23 sources
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Sources

The Guardian • Sep 19, 2024
Earth will briefly have a second ‘mini moon’ this autumn
Forbes • Sep 19, 2024
Temporary ‘Mini-Moon’ Will Begin To Orbit Earth Next Week: What To Know
Yahoo News • Sep 19, 2024
Earth will have a 'mini-moon' for nearly 2 months, researchers say. Here's what that means.

