Spacecraft information: ATLAS F R/B
| Launched | 10 December 1978 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 11142 |
| COSPAR ID | 1978-112B |
| Observing |
Current orbital elements
| Inclination | 64.256° |
| Eccentricity | 0.46441 |
| RA ascending node | 8.608 hr |
| Argument perigee | 247.669° |
| Mean anomaly | 57.732° |
| Orbital period | 269.346 min |
| Epoch of osculation | 11 Jul 2026, 06:14 |
Derived Quantities
| Min Altitude | 1028.5 km |
| Mean Altitude | 7444.5 km |
| Peak Altitude | 13860.6 km |
Launched alongside
NAVSTAR 4Orbital History
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