Earth has company for the holidays. Sometime in late April, our planet's gravity snagged a little space rock passing by and pulled it into a loose, loopy orbit. It has been riding along with us ever since, and it will hang around until roughly the new year.

Headlines are calling it Earth's "second moon." That is a stretch. The real story is better: for weeks, astronomers were not even sure it was a rock.

Meet 2026 QQ8

Fact: Hungarian astronomer Krisztián Sárneczky first spotted the object in August 2026. It was tracked under a temporary nickname, Sar2901, and on Oct. 29 the International Astronomical Union's Minor Planet Center, the clearinghouse that logs new objects in the solar system, made it official as 2026 QQ8.

Fact: It is tiny. Estimates run from about 3 feet to about 6 feet across, about the height of a person or smaller. It is circling at about one and a half times the Moon's average distance from Earth.

Fact: It is no threat. Something this small would burn up as a bright fireball if it ever hit our atmosphere, and researchers do not expect it to come anywhere close.

Rock or rocket?

Here is where it gets fun. In early September the Minor Planet Center refused to give the object a proper name. The reason: it was moving in an orbit very close to Earth's, and that is exactly how a piece of old space hardware behaves too. Before you call something a moon, you have to make sure it is not trash.

That worry has history. Fact: In 2020, astronomers found another small object, 2020 SO, drifting near Earth. NASA confirmed that December that it was not an asteroid at all. It was the Centaur upper stage from Surveyor 2, a NASA mission to the Moon launched in 1966. Its spectrum matched 1960s rocket steel. A "new minimoon" turned out to be a piece of the Space Age coming home.

Sunlight cracked the case

Fact: Follow-up observations from the Lowell Discovery Telescope in Arizona and the University of Hawaii's 88-inch telescope on Maunakea stretched out the tracking record. With a longer record, the Minor Planet Center could measure how much sunlight was pushing the object around.

Sunlight actually pushes on things, very gently. A hollow rocket stage has a lot of surface and not much weight, so sunlight nudges it off course noticeably, like a beach ball in the wind. A solid rock barely budges. 2026 QQ8 behaved like the rock. The Minor Planet Center ruled out an artificial origin and found no match to any known piece of space hardware.

Open question: Nobody has taken a spectrum of 2026 QQ8 yet, so we do not know exactly what kind of rock it is, and there is no peer-reviewed paper on it so far. The Minor Planet Center is asking astronomers for more observations.

So is it a second moon?

Not really. Fact: 2026 QQ8 is a small asteroid of the Aten type that normally orbits the Sun in 359 days, close to Earth's own year. It swings near us about every 10 years. It came close in 1965 without getting caught, and it will come close again in 2058 without getting caught. This year it crossed the line into Earth's zone of control and got temporarily stuck.

Fact: This happens more than you might think. The first known minimoon, 1991 VG, was found in 1991, and others have followed, including 2020 CD3 and 2024 PT5. Astronomers now think Earth probably has at least one tiny minimoon at almost any given time. We just do not see most of them.

That is about to change. The Vera C. Rubin Observatory in Chile, which started operating this year, scans the whole southern sky every few days and is expected to spot many more of these little hitchhikers.

The verdict

SOLVED. Earth really did pick up a tiny space rock this spring, and astronomers checked that it is natural, not a lost rocket stage. Just do not call it a second moon. It is more like a holiday houseguest: small, quiet, and gone by January. 🐇🕳️

Sources

1. Live Science, Joanna Thompson, "Astronomers confirm a tiny new moon is orbiting Earth, and it'll stick around for the holidays," Nov. 13, 2026. https://www.livescience.com/space/meteoroids/astronomers-confirm-a-tiny-new-moon-is-orbiting-earth-and-itll-stick-around-for-the-holidays
2. EarthSky, Kelly Kizer Whitt, "A new mini-moon for Earth! Meet 2026 QQ8," Nov. 4, 2026. https://earthsky.org/space/mini-moon-for-earth-2026-qq8/
3. XenoSpectrum, Y. Kobayashi, "Asteroid 2026 QQ8, a Likely Temporary Earth 'Mini-Moon,' Is Ruled a Natural Object," Nov. 6, 2026 (summarizing Minor Planet Center records). https://xenospectrum.com/en/qq8-natural-origin-follow-up/
4. NASA Jet Propulsion Laboratory, "New Data Confirm 2020 SO to Be the Upper Centaur Rocket Booster From the 1960's," Dec. 2, 2020. https://www.jpl.nasa.gov/news/new-data-confirm-2020-so-to-be-the-upper-centaur-rocket-booster-from-the-1960s/
5. Minor Planet Center, MPEC 2026-U95, "2026 QQ8: Temporarily Captured Object," Oct. 29, 2026. https://www.minorplanetcenter.net/mpec/K26/K26U95.html

Fact note: The Minor Planet Center circular was not read directly; its contents come from sources 2 and 3. Size estimates differ between sources (about 3 feet per EarthSky, about 6 feet per Live Science citing the IAU), so this file gives the range.