Flight
- Date and time (UTC)
- July 12, 1961, 15:11
- Launch designation
- 1961 SIG
- Mission
- Midas ETS-II F1
- Flight name
- Midas 3
- Vehicle flight ID
- 97D/1201
- Flight code
- POLAR ORBIT
- Year
- Launches in 1961
Orbit and payload
- Initial apogee
- 3,591 km
- Payload mass to orbit
- 1.6 t
- Payloads
- 2
- GCAT launch code
- OS
Payloads
| Payload | Designation | Owner | Mission type | Mass | Fate |
|---|---|---|---|---|---|
| Midas 3 | 1961 SIG 1NORAD 163 | US Air Force Space Systems Division | Missile early warning | 840 kg | In orbit, attached to another object |
| HEPDEX 1 | 1961 SIG 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.