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Second Moon for Earth: What you should know about 2024 PT5

Earth is about to gain a rare, temporary companion in space. A small asteroid, named 2024 PT5, will soon orbit Earth for two months, creating a fleeting "mini-moon" starting on 29 September.

September 25, 2024 / 09:31 IST
(Representative Image: Canva)

Earth is about to gain a rare, temporary companion in space. A small asteroid, named 2024 PT5, will soon orbit Earth for two months, creating a fleeting "mini-moon" starting on 29 September. The asteroid, recently discovered, will remain in orbit until 25 November before continuing its journey through space.

NASA’s Asteroid Terrestrial-impact Last Alert System (ATLAS) first identified 2024 PT5 on 7 August. It is estimated to be around 37 feet in diameter, although further data is required to confirm its exact size. The asteroid's short-lived capture has intrigued astronomers, who will closely observe its unique path.

A Safe Distance and No Collision Risk


2024 PT5 will orbit at a safe distance of 2.6 million miles from Earth. This is roughly ten times the distance between Earth and the Moon. Thankfully, there is no danger of a collision during its time as a mini-moon, or in the future.

While many mini-moons visit Earth's orbit every decade, they rarely stay long. In some cases, asteroids can orbit for years, but 2024 PT5 will remain for only a few weeks. This particular space rock belongs to the Arjuna asteroid group, which follows a similar orbit to Earth around the Sun.

Future Encounters with 2024 PT5


Interestingly, astronomers predict that 2024 PT5 will return as a mini-moon in 2055, and again in 2084. Its upcoming flyby in January 2025 will provide further opportunities for scientific study.

Though amateur astronomers won’t be able to view this dim object, professional telescopes will track its size and trajectory. These observations will offer valuable insights into Earth's temporary celestial visitors.

Sheetal Kumari
first published: Sep 25, 2024 09:30 am

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