Flight
- Date and time (UTC)
- October 21, 1976, 16:53
- Launch designation
- 1976-104
- Mission
- US-A reactor
- Flight name
- Kosmos-861
- Vehicle flight ID
- 67011-111
- Year
- Launches in 1976
Orbit and payload
- Initial apogee
- 1,010 km
- Payload mass to orbit
- 3.8 t
- Payloads
- 1
- GCAT launch code
- OS
Payloads
| Payload | Designation | Owner | Mission type | Mass | Fate |
|---|---|---|---|---|---|
| Kosmos-861 | 1976-104ANORAD 9494 | Soviet Navy | Signals intelligence | 1,150 kg | In orbit |
Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.