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PHASE 3B (AO-10) — Live Satellite Tracking (NORAD 14129)
Track PHASE 3B (AO-10) (NORAD catalog number 14129) 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 is object B of 1983's 58th orbital launch (COSPAR designation 1983-058B). As of this element set it had completed roughly 29,709 revolutions of Earth.
Its speed swings from 1.96 km/s at apogee to 7.80 km/s at perigee. PHASE 3B (AO-10) follows a highly elliptical orbit, completing a revolution every 11.7 hours. The orbit is strongly elliptical (eccentricity 0.5986): each revolution swings from 4,107 km at perigee out to 35,354 km at apogee. Its 26.0° inclination keeps its ground track over the tropics and lower mid-latitudes. Its orbital plane crosses the equator northbound at right ascension 206.8°. Earth's equatorial bulge drifts that plane westward about 0.16° per day.
Orbital elements
| Orbit regime | highly elliptical orbit (HEO) |
|---|---|
| Perigee × apogee altitude | ~4,107 km × 35,354 km |
| Inclination | 25.97° |
| Orbital period | 699.5 min (2.06 rev/day) |
| Eccentricity | 0.59856 |
| Element set epoch | 2026-09-03 |
| COSPAR designation | 1983-058B |
| NORAD catalog number | 14129 |
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 Other Active Satellites group
PHASE 3B (AO-10) is one of 4,471 active satellites in WatchSat's general catalog — the broad population of Earth-observation, communications, science, amateur-radio and technology spacecraft outside the giant broadband constellations. Browse all other active satellites live in 3D.
Can you see PHASE 3B (AO-10) from the ground?
Not with the naked eye. At its altitude PHASE 3B (AO-10) 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 PHASE 3B (AO-10) in the Other Active Satellites group — usually craft from the same or adjacent launches:
- UOSAT 2 (UO-11) (NORAD 14781)
- AJISAI (EGS) (NORAD 16908)
- LAGEOS 1 (NORAD 8820)
- TDRS 3 (NORAD 19548)
- COSMOS 1989 (ETALON 1) (NORAD 19751)
- COSMOS 2024 (ETALON 2) (NORAD 20026)
Browse the Other Active Satellites directory or the full satellite directory · What is a TLE? · WatchSat live globe