 OV3-1 | |
| Mission type | Earth science |
|---|---|
| Operator | USAF |
| COSPAR ID | 1966-034 |
| SATCAT no. | S02150 |
| Spacecraft properties | |
| Manufacturer | Space General |
| Launch mass | 69 kg (152 lb) |
| Start of mission | |
| Launch date | 22 Apr 1966 09:45:00 UTC |
| Rocket | Scout B |
| Launch site | Vandenberg PALC-D[1] |
| Orbital parameters | |
| Regime | Medium Earth Orbit |
| Eccentricity | 0.24301 |
| Perigee altitude | 341.00 km (211.89 mi) |
| Apogee altitude | 4,658.00 km (2,894.35 mi) |
| Inclination | 82.400° |
| Period | 138.70 minutes [2] |
| Epoch | 22 Apr 1966 09:50:00 |
Orbiting Vehicle 3-1 (also known as OV3-1 and OPS 1527[3] ), launched 22 April 1966, was the first satellite in the OV3 series of the United States Air Force's Orbiting Vehicle program. The satellite measured radiation above the Earth, returning useful data for over a year. It is still in orbit as of 1 April 2021.