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PRSS-1 — Live Satellite Tracking (NORAD 43530)
Track PRSS-1 (NORAD catalog number 43530) 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 2018's 56th orbital launch (COSPAR designation 2018-056B). It went up together with 1 other satellite from that launch still in the active catalog. As of this element set it had completed roughly 44,059 revolutions of Earth.
Moving at about 7.55 km/s, PRSS-1 flies in low Earth orbit at an altitude of roughly 629 × 631 km, completing one revolution every 97.2 minutes — about 14.8 trips around Earth per day. The orbit is essentially circular (eccentricity 0.0002). Its 97.8° retrograde, near-polar inclination is characteristic of a Sun-synchronous orbit — the type Earth-imaging and weather satellites use to revisit each spot at the same local solar time. Its orbital plane crosses the equator northbound at right ascension 315.9°. Earth's equatorial bulge precesses that plane eastward about 0.97° per day, matching the Sun's apparent motion — which is what holds its lighting constant.
Orbital elements
| Orbit regime | low Earth orbit (LEO) |
|---|---|
| Perigee × apogee altitude | ~629 km × 631 km |
| Inclination | 97.78° |
| Orbital period | 97.2 min (14.82 rev/day) |
| Eccentricity | 0.00018 |
| Element set epoch | 2026-09-07 |
| COSPAR designation | 2018-056B |
| NORAD catalog number | 43530 |
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
PRSS-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 PRSS-1 from the ground?
Sometimes. Like most low-Earth-orbit spacecraft, PRSS-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 PRSS-1 in the Other Active Satellites group — usually craft from the same or adjacent launches:
- PAKTES 1A (NORAD 43529)
- TELSTAR 19V (NORAD 43562)
- FENGYUN 2H (NORAD 43491)
- IRIDIUM 160 (NORAD 43569)
- IRIDIUM 166 (NORAD 43570)
- IRIDIUM 158 (NORAD 43571)
Browse the Other Active Satellites directory or the full satellite directory · What is a TLE? · WatchSat live globe