China National Space Administration said Tianwen-2 completed about a 400‑day, ~1 bln km approach and has rendezvoused with asteroid 2016 HO3, arriving at roughly 20 km and beginning scientific observations. The probe captured imagery during approach,

2026-07-06

China National Space Administration said Tianwen-2 completed about a 400‑day, ~1 bln km approach and has rendezvoused with asteroid 2016 HO3, arriving at roughly 20 km and beginning scientific observations. The probe captured imagery during approach, and teams used the optical-navigation data to refine the asteroid’s ephemeris, cutting position error from hundreds of km to the km scale. Tianwen-2 was launched from Xichang Satellite Launch Center on May 29, 2025.