Tiankun-1

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]

Tiankun-1
NamesTK-1
Mission typeTechnology demonstration
OperatorCASIC
COSPAR ID2017-012A[1]
SATCAT no.42061[1]
Mission duration6 years, 4 months and 5 days (elapsed)
Spacecraft properties
ManufacturerCASIC
Launch mass50 kg (110 lb)[2]
Start of mission
Launch dateMarch 2, 2017 (2017-03-02)
RocketKaituozhe-2
Launch siteJiuquan Satellite Launch Center[3]
ContractorCASIC
End of mission
Decay date7 July 2023[4]
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Semi-major axis6,766 km (4,204 mi)
Perigee altitude373.3 km (232.0 mi)
Apogee altitude417.3 km (259.3 mi)
Inclination97.2°
Period92.3 minutes
 

Design

Tiankun-1 is a small satellite designed to test technologies meant for satellites of such sizes, as well as experiment with the operation of small satellites. With its small launch vehicles, China hopes to be able to get a share in the international small satellite launch market.[3][7]

Tiankun-1's mission is to test out its satellite bus and performance in orbit. It would also be used for testing remote sensing and telecommunications technologies, as well as test out minisatellite-based experiments and operations. It is the first spacecraft to be developed by the CASIC as part of its plans to expand its commercial space plans.[6][7]

Launch

Tiankun-1 was launched on board a Kaituozhe-2 rocket, which is a then-new small launch vehicle. It launched from Jiuquan Satellite Launch Center on March 2, 2017, at 07:53 CST (23:53 UTC) into a polar orbit. It was the Kaituozhe-2's first launch, and its first successful one. It was launched to a low Earth orbit with a perigee of 373.3 km (232.0 mi), an apogee of 417.3 km (259.3 mi) and an inclination of 97.2°.[1][2]

References
  1. "Technical details for satellite TK-1". N2YO.com - Real Time Satellite Tracking and Predictions. Retrieved 2021-12-16.
  2. "Kaituozhe 2 | Tiankun-1". nextspaceflight.com. Retrieved 2021-12-16.
  3. Barbosa, Rui C. (2017-03-03). "Experimental Tiankun-1 lofted during secretive KT-2 launch". NASASpaceFlight.com. Retrieved 2021-12-16.
  4. "TK-1". N2YO.com. 1 July 2023. Retrieved 19 August 2023.
  5. "Tiankun 1". Gunter's Space Page. Retrieved 2021-12-16.
  6. "NASA - NSSDCA - Spacecraft - Details". nssdc.gsfc.nasa.gov. Retrieved 2021-12-16.
  7. "China launches new Kaituozhe-2 rocket with Tiankun-1 satellite". SpaceFlight Insider. 2017-03-03. Retrieved 2021-12-16.
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