Earth to Experience Temporary Capture of Mini Moon 2024 PT5 for Two Months

A small asteroid, roughly the size of a school bus, is set to become a temporary companion to Earth. This "mini moon," measuring about 10 metres, will be caught by Earth's gravity as it passes by on Sunday. It will orbit our planet for around two months before continuing its journey through space.

Mini Moon Discovery and Observation

Astronomers Carlos de la Fuente Marcos and Raúl de la Fuente Marcos discovered the asteroid, named 2024 PT5, in August. They used a powerful telescope located in Sutherland, South Africa. Their findings were published by the American Astronomical Society. The mini moon won't be visible to the naked eye or through amateur telescopes but can be observed with large research-grade telescopes.

Richard Binzel, an astronomer at the Massachusetts Institute of Technology, noted that these short-lived mini moons are likely more common than previously thought. "This happens with some frequency, but we rarely see them because they're very small and very hard to detect," he said. Only recently has our survey capability reached the point of spotting them routinely.

Origin and Future Path

The origin of this mini moon remains uncertain. Binzel mentioned that it might be an asteroid or possibly a fragment of the moon that was blasted out. The mini moon will circle Earth for nearly 57 days but won't complete a full orbit. On November 25, it will leave Earth's gravitational pull and continue its cosmic journey.

The last known mini moon was detected in 2020, highlighting how advancements in technology have improved our ability to spot these small celestial bodies. The mini moon is expected to pass by Earth again in 2055, offering another opportunity for observation.

As technology advances, astronomers anticipate discovering more of these temporary companions. While they are fleeting visitors, each offers valuable insights into the dynamics of our solar system and the objects within it.