Flight
- Date and time (UTC)
- July 8, 1985, 23:40
- Launch designation
- 1985-058
- Mission
- Tselina-D
- Flight name
- Kosmos-1666
- Vehicle flight ID
- 45042-301
- Year
- Launches in 1985
Orbit and payload
- Initial apogee
- 670 km
- Payload mass to orbit
- 1.8 t
- Payloads
- 1
- GCAT launch code
- OS
Payloads
| Payload | Designation | Owner | Mission type | Mass | Fate |
|---|---|---|---|---|---|
| Kosmos-1666 | 1985-058ANORAD 15889 | Glavnoye Razvedyvatelnoe Upravleniye | Signals intelligence | 1,750 kg | Reentered (orbital decay) · Jun 15, 2025 |
Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.