Norad ID: 5879
| Spacetrack Directory Name | TD-1A |
| Orbit launches |
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| Deorbitation date |
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| Days in orbit | 2859 |
| Country/organisation of origin | European Space Research Organization (ESRO) |
| Starting point | AFWTR (Vandenberg Air Force Base, USA) |
TD 1A, 5879 was a payload satellite owned by ESRO (EU) that was launched on Sun, 12 Mar 1972 UTC via a THOR DELTA N launch vehicle from the Air Force Western Test Range (AFWTR). Payloads include a variety of satellites, spacecraft, and rockets equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.