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NAVSTAR 85 (USA 581) — Live Satellite Tracking (NORAD 67588)
Track NAVSTAR 85 (USA 581) (NORAD catalog number 67588) live on the WatchSat interactive 3D globe above. Its position is propagated in real time from the latest CelesTrak two-line element set using the SGP4/SDP4 orbital model — the same math professional trackers run. It has been on orbit since 2026, launched on the 17th orbital launch of that year (COSPAR designation 2026-017A).
Moving at about 3.88 km/s, NAVSTAR 85 (USA 581) operates in medium Earth orbit at roughly 20,134–20,244 km altitude, taking about 12.0 hours per revolution (2.01 orbits a day). The orbit is essentially circular (eccentricity 0.0021). Inclined 55.1° to the equator, it overflies every latitude up to about 55° north and south. Its orbital plane crosses the equator northbound at right ascension 85.5°.
Orbital elements
| Orbit regime | medium Earth orbit (MEO) |
|---|---|
| Perigee × apogee altitude | ~20,134 km × 20,244 km |
| Inclination | 55.14° |
| Orbital period | 718.0 min (2.01 rev/day) |
| Eccentricity | 0.00208 |
| Element set epoch | 2026-09-05 |
| COSPAR designation | 2026-017A |
| NORAD catalog number | 67588 |
This page's orbital elements come from the CelesTrak catalog of 2026-09-08. The live 3D view above fetches its own current CelesTrak data when the page opens, through an edge cache that refreshes roughly every 30 minutes.
About the Navigation group
NAVSTAR 85 (USA 581) is part of the US GPS (NAVSTAR) fleet — one of 173 global-navigation satellites in the WatchSat catalog across GPS, GLONASS, Galileo and BeiDou. GNSS spacecraft broadcast precise time signals from orbits around 20,000 km up; a phone fixes its position by comparing several of them at once. See the whole navigation group live in 3D.
Can you see NAVSTAR 85 (USA 581) from the ground?
Not with the naked eye. At its altitude NAVSTAR 85 (USA 581) is far beyond unaided visibility — following satellites this high takes a telescope and good timing. You can still track it precisely in the live 3D view above, or check pass predictions for your location.
Related satellites
Nearest catalog neighbors of NAVSTAR 85 (USA 581) in the Navigation group — usually craft from the same or adjacent launches:
- GSAT0234 (GALILEO 34) (NORAD 67162)
- GSAT0233 (GALILEO 33) (NORAD 67160)
- NAVSTAR 86 (USA 585) (NORAD 68791)
- COSMOS 2596 [GLONASS-K1] (NORAD 65590)
- NAVSTAR 84 (USA 545) (NORAD 64202)
- COSMOS 2584 [GLONASS-K2] (NORAD 63130)
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