Tianwen-2
| Mission type | Asteroid sample return Comet orbiter/lander |
|---|---|
| Operator | CNSA |
| Mission duration | 10 years (planned) |
| Spacecraft properties | |
| Manufacturer | CAST |
| Launch mass | ≈2,100 kg (4,600 lb) |
| Start of mission | |
| Launch date | 28 May 2025, 17:31 UTC |
| Rocket | Long March 3B |
| Launch site | Xichang LC-2 |
| Contractor | CASC |
| 469219 Kamoʻoalewa orbiter | |
| Orbital insertion | 7 June 2026 |
| Orbital departure | 24 April 2027 |
| Sample mass | ≥100 g (0.2 lb) |
| 311P/PANSTARRS orbiter | |
| Orbital insertion | 24 January 2035 |
Tianwen-2 (Chinese: 天问二号) is a Chinese asteroid sample return and comet exploration mission that launched on 28 May 2025. China National Space Agency (CNSA) plans for the probe to return samples from asteroid 469219 Kamoʻoalewa in 2027. After the mothership drops off the sample return vessel to Earth, it is planned that it will then rendezvous with main-belt comet 311P/PANSTARRS and explore it with its 11 onboard instruments.