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USA 81
Check the current position, flight trajectory, and orbital parameters for the USA 81 satellite (ID: 21949). Find out when it will be visible in the sky.
Calculate next passesOrbital data
| Name | USA 81 |
|---|---|
| NORAD ID | 21949 |
| Group | visual |
| TLE epoch | 2026-05-11T04:20:41.171712+00:00 |
| Inclination | 85.0052 deg |
| Eccentricity | 0.0001916 |
| Mean motion | 14.3239 rev/day |
| Orbital period | 100.5 min |
| Perigee | 782.4 km |
| Apogee | 785.1 km |
Current position and passes
The interactive orbit map and visible pass predictions are available in the tracker app.
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