Flight
- Date and time (UTC)
- April 10, 1974, 20:20
- Launch designation
- 1974-020
- Mission
- HEXAGON SV-8
- Flight name
- HEXAGON SV8
- Vehicle flight ID
- 23D-9
- Year
- Launches in 1974
Orbit and payload
- Initial apogee
- 826 km
- Payload mass to orbit
- 10.7 t
- Payloads
- 8
- GCAT launch code
- OS
Payloads
| Payload | Designation | Owner | Mission type | Mass | Fate |
|---|---|---|---|---|---|
| OPS 6245 | 1974-020ANORAD 7242 | National Reconnaissance Office | Optical imaging | 7,088 kg | Deorbited · Jul 28, 1974 |
| TOPHAT II | 1974-020CNORAD 7247 | National Reconnaissance Office | Signals intelligence | 162 kg | Reentered (orbital decay) · Feb 22, 1980 |
| S73-7 Cal Balloon | 1974-020 | USAF SMC/DoD Space Test Program | — | — | — |
| SRV Mission 1208-1 | 1974-020 | National Reconnaissance Office | — | — | — |
| SRV Mission 1208-2 | 1974-020 | National Reconnaissance Office | — | — | — |
| SRV 1804 | 1974-020 | National Reconnaissance Office | — | — | — |
| SRV Mission 1208-3 | 1974-020 | National Reconnaissance Office | — | — | — |
| SRV Mission 1208-4 | 1974-020 | National Reconnaissance Office | — | — | — |
Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.