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USA 143
Launch Details
| Launched | 29 April 1999 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 25724 |
| COSPAR ID | 1999-023A |
| Alternative names |
MILSTAR-2 1 |
| Observing |
Current orbital elements
| Inclination | 28.230° |
| Eccentricity | 0.21281 |
| RA ascending node | 18.753 hr |
| Argument perigee | 222.391° |
| Mean anomaly | 119.120° |
| Orbital period | 153.603 min |
| Epoch of osculation | 15 Sep 2025, 04:51 |
Derived Quantities
| Min Altitude | 1107.9 km |
| Mean Altitude | 3129.8 km |
| Peak Altitude | 5151.7 km |
Orbital History
Drag the graphs below left or right to change the time range, or use your scroll wheel to zoom in or out.
Launched alongside
TITAN 4B CENTAUR R/B