Norad ID: 15889
| Spacetrack Directory Name | COSMOS 1666 |
| Orbit launches |
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| Deorbitation |
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| Country/organisation of origin | Commonwealth of Independent States (former USSR) (CIS) |
| Starting point | PLMSC (Plesetsk Missile and Space Complex, Russia) |
| Perigee | 498 km |
| Apogee | 519 km |
COSMOS 1666, 15889 is a payload satellite owned by GRU (CIS) in LEO that was launched on Mon, 08 Jul 1985 UTC via a TSIKLON-3 launch vehicle from the Plesetsk Missile And Space Complex (PKMTR). 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.
satellite COSMOS 1666 Date of exalting 08.07.1985y.