Arjuna 2025 PN7 has been discovered in the Arjuna asteroid belt. It has been here for a long time. Is it a quasi moon or a mini moon? What is the difference?
The Arjuna group of asteroids has a new member - Arjuna 2025 PN7. This asteroid is one of several quasi-moons that almost share Earth's orbit around the Sun. The discovery was presented in the Research Notes of the American Astronomical Society title... [2628 chars]