Tiankun-1
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| Names | TK-1 |
|---|---|
| Mission type | Technology demonstration |
| Operator | CASIC |
| COSPAR ID | 2017-012A[1] |
| SATCAT no. | 42061[1] |
| Mission duration | 6 years, 4 months and 5 days (elapsed) |
| Spacecraft properties | |
| Manufacturer | CASIC |
| Launch mass | 50 kg (110 lb)[2] |
| Start of mission | |
| Launch date | March 2, 2017 |
| Rocket | Kaituozhe-2 |
| Launch site | Jiuquan Satellite Launch Center[3] |
| Contractor | CASIC |
| End of mission | |
| Decay date | 7 July 2023[4] |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Semi-major axis | 6,766 km (4,204 mi) |
| Perigee altitude | 373.3 km (232.0 mi) |
| Apogee altitude | 417.3 km (259.3 mi) |
| Inclination | 97.2° |
| Period | 92.3 minutes |
Tiankun-1 (also known as TK-1) is a Chinese experimental technology demonstration satellite developed, operated, and launched by China Aerospace Science and Industry Corporation (CASIC). It was launched on March 2, 2017, and is designed in order to test its satellite bus,[5][6] as well as small satellite operations.[7] The satellite decayed from orbit on 7 July 2023.[4]