Tianmu-1, a commercial meteorological satellite constellation for China’s Xiyong Microelectronics Park, was established by CASIC subsidiary. Its primary purpose is to conduct meteorological research using radio occultation GNSS.
| Name of Satellite | Tianmu-1 |
| Purpose | Meteorological |
| Contractor | China Aerospace Science and Technology Corp. (CASC) |
| Country of Contractor | China |
| Launch Mass (kg.) | 50 |
| Class of Orbit | LEO |
| Perigee (km) | 502 |
| Expected Lifetime (yrs.) | 2 |
| Date of Launch | 22.03.2023 |
| Launch Site | Jiuquan Satellite Launch Center |
| Launch Vehicle | Kuaizhou 1A |
| COSPAR Number | 2023-039A |
| NORAD Number | 55973 |
In 2023, the first pair was launched from the Ceres-1(3) satellite (Gushenxing-1(3)).
