| Vela 4A | |
| Operator: | USAF |
| Cospar Id: | 1967-040A[1] |
| Satcat: | 2765[2] |
| Manufacturer: | TRW |
| Launch Mass: | 225kg (496lb) |
| Power: | 120 W |
| Launch Date: | UTC |
| Launch Rocket: | Titan III-C |
| Launch Site: | Cape Canaveral LC-41 |
| Orbit Reference: | Geocentric |
| Orbit Regime: | Highly Elliptical |
| Orbit Periapsis: | 53631.5km (33,325.1miles) |
| Orbit Apoapsis: | 161866.1km (100,578.9miles) |
| Orbit Inclination: | 19.9° |
| Orbit Semimajor: | 117619km (73,085miles) |
| Orbit Period: | 6690.8minutes |
| Apsis: | gee |
| Programme: | Vela |
| Previous Mission: | Vela 3B |
| Next Mission: | Vela 4B |
Vela 4A (also known Vela 7 and OPS 6638[3]) was an American reconnaissance satellite to detect explosions and nuclear tests on land and in space. It was released together with Vela 4B, ERS 18, OV5 1 and OV5 3.[4]
The ship remains in orbit around Earth.