Plate Nº 74 · recorded November 4, 2026
Space & AstronomyReported finding
2026 QQ8: Earth's Temporary Mini-Moon Through December
Earth temporarily captured the roughly 1-meter asteroid 2026 QQ8 in April 2026. Observations rule out space junk, and the rock should remain bound until December.
By Priya Raman3 min read638 words
In brief
- 2026 QQ8 is about 1 meter, or 3 feet, across and likely a small asteroid.
- The object entered temporary orbit around Earth in late April 2026 and should remain bound through December.
- Its closest projected approach is 0.0038 AU, about 1.5 times the Moon’s distance.
- The Minor Planet Center reported 2026 QQ8 on October 29, 2026, after its August 20 discovery.
- 2026 QQ8 approaches Earth about every 10 years; its 1965 and 2058 passes fall short of capture.
By Priya Raman
Earth has temporarily captured a roughly 1-meter object, 2026 QQ8, likely a small asteroid that entered orbit in late April 2026 and should remain bound through December. On October 29, 2026, the Minor Planet Center reported that Krisztián Sárneczky had originally discovered the small rock near Earth on August 20, 2026.
A mini-moon is a small natural object that Earth’s gravity holds temporarily before the object leaves orbit and resumes its path around the Sun. That makes 2026 QQ8 a short-lived addition to Earth’s neighborhood, not a permanent second natural satellite.
What confirmed that 2026 QQ8 was not space junk?
At first, observers debated whether the object had a natural origin or might be debris from a rocket or an old satellite. That distinction matters because human-made fragments can follow paths resembling those of natural objects passing near Earth.
Follow-up observations with the University of Hawaii 2.2-meter telescope and the Lowell Discovery Telescope gave astronomers enough information to rule out space junk. The Minor Planet Center confirmed that 2026 QQ8 has a natural origin, and the leading explanation is that it is a small asteroid.
Could it hit Earth?
The projected orbit rules out a collision. The closest the object will come to Earth is 0.0038 astronomical units, or AU, a standard unit for measuring distances across the Solar System. That is about one and a half times the distance of the actual Moon.
At about 3 feet, or 1 meter, 2026 QQ8 would do little more than create a fiery display if it entered Earth’s atmosphere. Its orbital forecast provides no reason for concern about an impact.
Why does its orbit look unusual?
The capture depends on crossing Earth’s Hill sphere, also called the Hill radius. This is the region around Earth within which Earth’s gravity can control a passing object’s motion. Outside the boundary, the Sun dominates the object’s movement. In April, 2026 QQ8 crossed Earth’s Hill sphere, allowing the planet’s gravity to bind it temporarily.
An artist’s concept illustrates the object as a rough, rounded rock. A separate orbital animation by Tony Dunn depicts 2026 QQ8 becoming captured, tracing an irregular loop and then escaping, while the more circular white line shows the Moon’s orbit. The available orbital data lets astronomers reconstruct that route more clearly.
The rock also comes close to Earth approximately every 10 years. Its 1965 approach brought it fairly close, but not close enough for temporary capture. Another approach in 2058 should also fall short of the capture boundary, so Earth will not regain a mini-moon then.
When will 2026 QQ8 leave?
The object became temporarily bound to Earth in late April and should stay through December. In 2027, it will continue on its own journey around the Solar System. The capture changes its path for several months, but it does not turn the rock into a long-term satellite.
Which other recent objects have shared Earth’s orbit?
Temporary captures by Earth are not unusual. Earlier mini-moons include:
- 2020 SO
- 2020 CD3
- 2024 PT5
The recently identified quasi-moon 2025 PN7 belongs in a different category. A quasi-moon does not truly orbit Earth; it only appears to do so from our viewpoint.
More precisely, a quasi-moon shares an orbit with Earth, although the two paths are not identical. It does not always remain ahead of or behind Earth. Instead, it sometimes appears in front of Earth and sometimes behind it. That distinction separates 2025 PN7 from objects such as 2026 QQ8, which Earth’s gravity actually captures.
The short forecast is now specific: 2026 QQ8 entered capture in April, should remain through December and will resume its own path around the Sun in 2027.
via minorplanetcenter.net (Original)
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Senior reporter covering people, launches and day-to-day practice in general science news at SciBeat.
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