Discover the Mystery of 2025 PN7: Why It’s Known as Earth’s Second Moon – Everything You Need to Know
NASA recently confirmed that Earth has a new companion in space, a small asteroid named 2025 PN7. This object, approximately 19 meters (62 feet) in diameter, has been trailing Earth for decades. Astronomers at the University of Hawaii made this discovery using the Pan-STARRS observatory, announcing their findings on August 29, 2025.
2025 PN7: Earth’s Quasi-Moon Explained
Known as a quasi-moon, 2025 PN7 is not a moon in the traditional sense. Instead, it follows a similar orbital path around the Sun as Earth does, earning it this honorary title. It does not orbit Earth directly but moves in a slightly elongated loop, remaining in close proximity to our planet, akin to a cosmic neighbor jogging behind us.
Orbit and Future of 2025 PN7
2025 PN7 is expected to accompany Earth until 2083. Following this period, it will drift away to continue its journey through space. This asteroid’s faintness and distance presented challenges for astronomers, making its discovery a notable achievement.
Historical Context of Quasi-Moons
This isn’t the first instance of Earth having a quasi-moon. At least seven such objects have been identified over the years. Notably, one was thought to be a fragment from our Moon, formed during an ancient impact.
- 164207 Cardea (2004 GU9)
- 469219 Kamo‘oalewa (2016 HO3)
- 277810 (2006 FV35)
- 2013 LX28
- 2014 OL339
- 2023 FW13
- 2025 PN7: The newest addition
Notable Discoveries of Quasi-Moons
Past discoveries, such as the quasi-moon 1991 VG, sparked rumors of extraterrestrial life due to its peculiar orbit. While these theories were ultimately debunked, curiosity about interstellar objects remains high.
Frequently Asked Questions
- What is 2025 PN7? It is a small asteroid confirmed by NASA as Earth’s new quasi-moon.
- How long will it stay near Earth? NASA indicates it will remain until 2083.
- What is its size? About 19 meters (62 feet), similar to a city bus.
- Has Earth had other quasi-moons? Yes, at least seven have been discovered.
As Earth orbits the Sun, 2025 PN7 will continue to be a fascinating presence, reminding us of the many mysteries that space holds.
