Flight
- Date and time (UTC)
- June 17, 1966, 11:00
- Launch designation
- 1966-054
- Mission
- Zenit-4 No. 20
- Flight name
- Kosmos-121
- Vehicle flight ID
- U 15001- 08
- Year
- Launches in 1966
Orbit and payload
- Initial apogee
- 331 km
- Payload mass to orbit
- 5.7 t
- Payloads
- 1
- GCAT launch code
- OS
Payloads
| Payload | Designation | Owner | Mission type | Mass | Fate |
|---|---|---|---|---|---|
| Kosmos-121 | 1966-054ANORAD 2210 | Central Space Forces Directorate | Optical imaging | 2,200 kg | Landed · Jun 25, 1966 |
Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.