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RIGIDSPHERE 2 (LCS 4) — Live Satellite Tracking (NORAD 5398)
Track RIGIDSPHERE 2 (LCS 4) (NORAD catalog number 5398) 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 E of 1971's 67th orbital launch (COSPAR designation 1971-067E).
Moving at about 7.51 km/s, RIGIDSPHERE 2 (LCS 4) flies in low Earth orbit at an altitude of roughly 731 × 814 km, completing one revolution every 100.1 minutes — about 14.4 trips around Earth per day. The orbit is essentially circular (eccentricity 0.0058). Inclined 87.6° — nearly pole-to-pole — its ground track sweeps essentially every latitude. Its orbital plane crosses the equator northbound at right ascension 316.0°. Earth's equatorial bulge drifts that plane westward about 0.28° per day.
Orbital elements
| Orbit regime | low Earth orbit (LEO) |
|---|---|
| Perigee × apogee altitude | ~731 km × 814 km |
| Inclination | 87.62° |
| Orbital period | 100.1 min (14.38 rev/day) |
| Eccentricity | 0.00582 |
| Element set epoch | 2026-09-07 |
| COSPAR designation | 1971-067E |
| NORAD catalog number | 5398 |
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
RIGIDSPHERE 2 (LCS 4) 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 RIGIDSPHERE 2 (LCS 4) from the ground?
Sometimes. Like most low-Earth-orbit spacecraft, RIGIDSPHERE 2 (LCS 4) 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 RIGIDSPHERE 2 (LCS 4) in the Other Active Satellites group — usually craft from the same or adjacent launches:
- OSCAR 7 (AO-7) (NORAD 7530)
- STARLETTE (NORAD 7646)
- OPS 5712 (P/L 153) (NORAD 2874)
- SURCAL 159 (NORAD 2872)
- LES-5 (NORAD 2866)
- OPS 5712 (P/L 160) (NORAD 2826)
Browse the Other Active Satellites directory or the full satellite directory · What is a TLE? · WatchSat live globe