A Chinese spacecraft the public almost never hears from is now drifting within a few thousand kilometers of one of the oddest objects in Earth’s cosmic neighborhood. On Saturday, 4 July 2026, it is expected to close the gap to about 20 kilometers and begin photographing the thing up close for the first time.
The spacecraft is Tianwen-2, China’s first asteroid sample-return mission, launched in May 2025 and largely silent since. Its target is 469219 Kamoʻoalewa, a quasi-moon of Earth that is no wider than a city block and may, just possibly, be a piece of our own Moon.
Confirmation that the probe had arrived came not from Beijing but from amateur radio astronomers. The China National Space Administration said little about a rendezvous burn around 7 June, but observers at AMSAT-DL, tracking the craft from radio telescopes in Germany and the Netherlands, watched it edge steadily toward the asteroid and concluded the maneuver had worked.
June 7 was what we expected to be the rendezvous with Kamoʻoalewa
, Andrew Jones, a contributing editor at The Planetary Society who covers China’s space program, told Planetary Radio. The agency had not officially confirmed the burn, he noted, but the German and Dutch tracking pretty much confirmed that this maneuver took place.
What makes Kamoʻoalewa worth a multi-year, sample-return mission is its strangeness. It is one of only seven known quasi-moons — rocks caught in a loose resonance that keeps them looping near Earth without ever orbiting it. This one measures somewhere between 40 and 100 meters across and spins fast, completing a rotation roughly every 28 minutes.
And there is the origin question, which is really the heart of the science.
One camp argues Kamoʻoalewa is an ordinary, heavily space-weathered asteroid that wandered in from the main belt between Mars and Jupiter. The other says it is a fragment of the Moon, blasted into a sun-orbit by an impact within the last 10 million years — possibly the strike that carved the far-side crater Giordano Bruno. A University of Hawaiʻi-led team published findings in 2021 pointing toward the lunar explanation, and the debate has only sharpened as the spacecraft drew near.
It might even be a chunk of the Moon
, Jones said. It gives us an opportunity to do some serious science.
The object carries a Hawaiian name for a reason. It was spotted in 2016 by the Pan-STARRS survey telescope on Haleakalā, run by the UH Institute for Astronomy, making it the first Hawaiian-named body ever visited by a spacecraft. Students named it in 2019 through a program that builds ʻōlelo Hawaiʻi names for objects found by the islands’ observatories; the word evokes a celestial object that oscillates, drawn from the creation chant Kumulipo.
“This is a remarkable moment for planetary science. A target first identified through observations from Hawaiʻi is now being visited by a spacecraft, opening the door to discoveries that simply cannot be made from Earth alone. The mission has the potential to reveal how Kamoʻoalewa formed and whether it truly originated from the Moon.”
Doug Simons, director, UH Institute for Astronomy
The work ahead is slow and finicky. From July through April 2027, Tianwen-2 plans to map the asteroid with LiDAR, cameras and a sounding radar, hunting for stable spots to grab material. China intends to collect between 200 and 1,000 grams using two techniques — a touch-and-go pass and an anchor-and-attach method that would clamp the probe to the surface, depending on what that surface turns out to be.
If the schedule holds, the spacecraft departs Kamoʻoalewa on 24 April 2027 — China’s National Space Day, a date the program tends to choose deliberately — and swings back past Earth months later to drop a sample capsule near the Jiuquan launch center, the same desert site used for returning astronauts. The mothership would not stop there. It is meant to push on toward the main-belt comet 311P/PanSTARRS, a second target roughly a decade out.
For now the milestone is narrower, and it lands within days. A successful close approach on 4 July would give scientists their first detailed look at a world that has teased astronomers since its discovery, and a real shot at settling whether one of Earth’s tiny companions is a stray asteroid or a long-lost shard of the Moon. Either answer reshapes part of the story of how rocks end up sharing our orbit — which is the kind of question that only a sample, returned to a lab on Earth, can close.
It also slots into a widening run of Chinese deep-space work, from Mars to the lunar far side to a fast-expanding set of orbital capabilities. The quiet probe at Kamoʻoalewa is one more piece of it — and unlike NASA’s headline-grabbing scramble to rescue its aging Swift telescope or the latest deep-field images from the Hubble Space Telescope, it has done most of its traveling without an audience.
