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SMDC ONE 2.3 — Live Satellite Tracking (NORAD 39474)
Track SMDC ONE 2.3 (NORAD catalog number 39474) 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 N of 2013's 72nd orbital launch (COSPAR designation 2013-072N). It went up together with 3 other satellites from that launch still in the active catalog.
Moving at about 7.76 km/s, SMDC ONE 2.3 flies in low Earth orbit at an altitude of roughly 267 × 290 km, completing one revolution every 89.9 minutes — about 16.0 trips around Earth per day. The orbit is essentially circular (eccentricity 0.0017). Inclined 120.4° — nearly pole-to-pole — its ground track sweeps essentially every latitude. Its orbital plane crosses the equator northbound at right ascension 123.5°. Earth's equatorial bulge drifts that plane eastward about 4.36° per day.
Orbital elements
| Orbit regime | low Earth orbit (LEO) |
|---|---|
| Perigee × apogee altitude | ~267 km × 290 km |
| Inclination | 120.43° |
| Orbital period | 89.9 min (16.01 rev/day) |
| Eccentricity | 0.00171 |
| Element set epoch | 2026-09-07 |
| COSPAR designation | 2013-072N |
| NORAD catalog number | 39474 |
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
SMDC ONE 2.3 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 SMDC ONE 2.3 from the ground?
Sometimes. Like most low-Earth-orbit spacecraft, SMDC ONE 2.3 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 SMDC ONE 2.3 in the Other Active Satellites group — usually craft from the same or adjacent launches:
- TACSAT 6 (NORAD 39473)
- INMARSAT 5-F1 (NORAD 39476)
- SMDC ONE 2.4 (NORAD 39469)
- ALICE (NORAD 39467)
- TKSAT-1 (TUPAC KATARI) (NORAD 39481)
- COSMOS 2488 (RODNIK-S 7) (NORAD 39483)
Browse the Other Active Satellites directory or the full satellite directory · What is a TLE? · WatchSat live globe