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OV1-21
Launch Details
| Launched | 6 August 1971 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 5397 |
| COSPAR ID | 1971-067B |
| Observing |
Current orbital elements
| Inclination | 87.636° |
| Eccentricity | 0.00812 |
| RA ascending node | 9.805 hr |
| Argument perigee | 347.839° |
| Mean anomaly | 12.083° |
| Orbital period | 101.541 min |
| Epoch of osculation | 15 Sep 2025, 02:56 |
Derived Quantities
| Min Altitude | 780.2 km |
| Mean Altitude | 838.8 km |
| Peak Altitude | 897.3 km |
Orbital History
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