Although it is already visible in 2014, only now is the small asteroid 2025 PN7 to have been classified as a near-satellite of the earth.
Astronomers identified a New Almost Satellite of Earthincreasing the total known objects of this type to eight. The small asteroid, designated 2025 PN7, was spotted last month and joins a rare group of bodies that share the orbit of the earth around the sun. The discovery was reported in a detailed Research Notes of the American Astronomical Society.
The quasi-satellites, also known as quasi-blond, are not true moons. Unlike our natural satellite, They are not gravitatingly linked to the earth. Instead, they trace circular trajectories around the planet while orbiting the sun in sync with a year’s trip from Earth. In our perspective, they seem to hover close to us, Creating the illusion of a partner.
It is estimated that the newly discovered 2025 PN7 has only a few tens of meters in diameter. Despite its modest size, its trajectory keeps it at a safe distance of several million kilometers, right beyond the hill sphere of the planet, the zone where the severity of the Earth dominates and can temporarily capture small objects such as “mini,” writes the.
The researchers who analyzed archive images found that the 2025 PN7 It was already visible in 2014but was only recognized with new observations this summer. Models suggest that asteroid has been in its current resonant orbit for decades and is expected to remain in it for a few more years.
“These objects perform a complex dance with the earth“They observed astronomers.“ They are influenced by the severity of our planet, but they continue to be independent travelers around the sun. ” Some quasi-satellites, such as Cardea, remain stable for centuries, while others, such as the 2025 PN7, may remain short for shorter periods before they move away.
Quarrassment represent a unique opportunity for scientific study. Their relative proximity makes them attractive destinations for space missions. For example, the Chinese probe Tianwen-2, launched in May, is currently on the way to the nearly satellite 469219 Kamoʻoalewa, where samples are expected to collect in the coming years.
