Spacecraft information: TOPO 1
| Launched | 7 April 1970 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 4363 |
| COSPAR ID | 1970-025B |
| Observing |
Current orbital elements
| Inclination | 99.889° |
| Eccentricity | 0.00023 |
| RA ascending node | 5.148 hr |
| Argument perigee | 28.244° |
| Mean anomaly | 94.770° |
| Orbital period | 106.928 min |
| Epoch of osculation | 12 Jun 2026, 06:52 |
Derived Quantities
| Min Altitude | 1089.9 km |
| Mean Altitude | 1091.6 km |
| Peak Altitude | 1093.3 km |
Launched alongside
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