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PROX-1 — Live Satellite Tracking (NORAD 44339)
Track PROX-1 (NORAD catalog number 44339) 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 2019, launched on the 36th orbital launch of that year (COSPAR designation 2019-036A). It went up together with 9 other satellites from that launch still in the active catalog. As of this element set it had completed roughly 38,572 revolutions of Earth.
Moving at about 7.57 km/s, PROX-1 flies in low Earth orbit at an altitude of roughly 594 × 601 km, completing one revolution every 96.5 minutes — about 14.9 trips around Earth per day. The orbit is essentially circular (eccentricity 0.0005). Its 24.0° inclination keeps its ground track over the tropics and lower mid-latitudes. Its orbital plane crosses the equator northbound at right ascension 286.0°. Earth's equatorial bulge drifts that plane westward about 6.68° per day.
Orbital elements
| Orbit regime | low Earth orbit (LEO) |
|---|---|
| Perigee × apogee altitude | ~594 km × 601 km |
| Inclination | 23.99° |
| Orbital period | 96.5 min (14.92 rev/day) |
| Eccentricity | 0.00049 |
| Element set epoch | 2026-09-07 |
| COSPAR designation | 2019-036A |
| NORAD catalog number | 44339 |
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
PROX-1 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 PROX-1 from the ground?
Sometimes. Like most low-Earth-orbit spacecraft, PROX-1 is visible only around dawn and dusk, when your sky is dark but the satellite is still sunlit — and whether you can spot it depends on its size and reflectivity. See pass predictions for your location for when it is above your horizon and sunlit.
Related satellites
Nearest catalog neighbors of PROX-1 in the Other Active Satellites group — usually craft from the same or adjacent launches:
- NPSAT1 (NORAD 44340)
- OTB (NORAD 44341)
- FORMOSAT 7-3 (NORAD 44343)
- EUTELSAT 7C (NORAD 44334)
- DSX (NORAD 44344)
- AT&T T-16 (NORAD 44333)
Browse the Other Active Satellites directory or the full satellite directory · What is a TLE? · WatchSat live globe