What is a ‘mini-moon’?

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About Mini-moon:

Mini-moons are asteroids that fail to escape Earth’s gravity and end up orbiting the planet for some time.
They are usually very small and hard to detect — only four mini-moons of Earth have ever been discovered, and none are still orbiting Earth.
These events are relatively frequent, with similar occurrences happening every few decades.
How does Earth capture Mini Moons?
- Mini moons are captured from the Near-Earth Object (NEO) population, which consists of asteroids and other celestial bodies that pass close to Earth.
- NASA classifies any space object that comes within 120 million miles (190 million kilometers) of our planet as a near-Earth object, while objects within 4.7 million miles (7.5 million kilometers) are considered potentially hazardous.

Key facts about 2024 PT5

It is an Apollo-class NEO, which follows an orbit similar to that of previous mini moons like 2022 NX1.
The asteroid was discovered with the help of the NASA-funded Asteroid Terrestrial-impact Last Alert System (ATLAS).
It is estimated to be just 33 feet long and is too small to be visible to the naked eye or through typical amateur telescopes.
It is within the brightness range of telescopes used by professional astronomers.
Significance: The observations of 2024 PT5 will help scientists expand the knowledge of asteroids that pass close to the Earth and those that sometimes collide with it.

Q1; What are Asteroids?

Asteroids, sometimes called minor planets, are rocky remnants left over from the early formation of our solar system about 4.6 billion years ago. The current known asteroid count is at least 1,351,400. Most of this ancient space rubble can be found orbiting the Sun between Mars and Jupiter within the main asteroid belt.

Source: Why Earth will temporarily get a ‘mini-moon’ in September