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Spacecraft information: ATLAS 28E R/B
Launch Details
| Launched | 10 April 1990 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 20563 |
| COSPAR ID | 1990-031D |
| Observing |
Current orbital elements
| Inclination | 89.868° |
| Eccentricity | 0.00608 |
| RA ascending node | 17.308 hr |
| Argument perigee | 125.916° |
| Mean anomaly | 234.773° |
| Orbital period | 97.305 min |
| Epoch of osculation | 12 Dec 2025, 06:46 |
Derived Quantities
| Min Altitude | 594.2 km |
| Mean Altitude | 636.8 km |
| Peak Altitude | 679.4 km |
Launched alongside
USA 56 USA 57 USA 58 ATLAS 28E DEB ATLAS 28E DEB ATLAS 28E DEB ATLAS 28E DEB USA 56-58 DEBOrbital History
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