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SWARM B — Live Satellite Tracking (NORAD 39451)
Track SWARM B (NORAD catalog number 39451) 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 2013, launched on the 67th orbital launch of that year (COSPAR designation 2013-067A). It went up together with 2 other satellites from that launch still in the active catalog. As of this element set it had completed roughly 69,578 revolutions of Earth.
Moving at about 7.63 km/s, SWARM B flies in low Earth orbit at an altitude of roughly 484 × 488 km, completing one revolution every 94.2 minutes — about 15.3 trips around Earth per day. The orbit is essentially circular (eccentricity 0.0003). Inclined 87.7° — nearly pole-to-pole — its ground track sweeps essentially every latitude. Its orbital plane crosses the equator northbound at right ascension 317.4°. Earth's equatorial bulge drifts that plane westward about 0.30° per day.
Orbital elements
| Orbit regime | low Earth orbit (LEO) |
|---|---|
| Perigee × apogee altitude | ~484 km × 488 km |
| Inclination | 87.75° |
| Orbital period | 94.2 min (15.29 rev/day) |
| Eccentricity | 0.00034 |
| Element set epoch | 2026-09-07 |
| COSPAR designation | 2013-067A |
| NORAD catalog number | 39451 |
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
SWARM B 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 SWARM B from the ground?
Sometimes. Like most low-Earth-orbit spacecraft, SWARM B 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 SWARM B in the Other Active Satellites group — usually craft from the same or adjacent launches:
- SWARM A (NORAD 39452)
- SWARM C (NORAD 39453)
- SHIYAN-5 (SY-5) (NORAD 39455)
- UWE-3 (NORAD 39446)
- FUNCUBE-1 (AO-73) (NORAD 39444)
- SES-8 (NORAD 39460)
Browse the Other Active Satellites directory or the full satellite directory · What is a TLE? · WatchSat live globe