Overview
- On Thursday, November 12, 2026, a peer‑reviewed Icarus study concluded that 1998 KY26 is too warm to retain buried water ice long enough to drive the observed nongravitational acceleration.
- Separate modeling by Avi Loeb and colleagues showed that the object's brightness, rapid rotation and orbital behavior are consistent with a derelict spacecraft similar to the Soviet Phobos 1, though the authors say the result is not conclusive.
- Spectral analyses published earlier this year continue to match KY26 to ordinary rocky material from the inner asteroid belt, leaving sunlight pressure and thermal re‑emission as viable natural explanations.
- NASA leadership has stated there is no evidence the object poses a threat and no definitive proof it is artificial, while scientists emphasize that limited remote data leave multiple plausible causes.
- Japan's Hayabusa2 spacecraft is scheduled to rendezvous with KY26 in July 2031, and mission cameras and instruments are expected to provide the first direct observations able to resolve the object's nature.