Flight
- Date and time (UTC)
- October 21, 1961, 13:53
- Launch designation
- 1961 A DEL
- Mission
- Midas ETS-II F2
- Flight name
- Midas 4
- Vehicle flight ID
- 105D/1202
- Flight code
- BIG TOWN
- Year
- Launches in 1961
Orbit and payload
- Initial apogee
- 4,828 km
- Payload mass to orbit
- 1.7 t
- Payloads
- 3
- GCAT launch code
- OS
Payloads
| Payload | Designation | Owner | Mission type | Mass | Fate |
|---|---|---|---|---|---|
| Midas 4 | 1961 A DEL 1NORAD 192 | US Air Force Space Systems Division | Missile early warning | 840 kg | In orbit, attached to another object |
| West Ford 1 Dispenser | 1961 A DEL 3NORAD 194 | US Air Force Space Systems Division | Communications | 30 kg | In orbit |
| HEPDEX 2 | 1961 A DEL 1 | US Air Force Space Systems Division | — | — | — |
Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.