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PAYLOAD B — Live Satellite Tracking (NORAD 49113)
Track PAYLOAD B (NORAD catalog number 49113) 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 2021's 76th orbital launch (COSPAR designation 2021-076B). 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 26,519 revolutions of Earth.
Moving at about 7.44 km/s, PAYLOAD B flies in low Earth orbit at an altitude of roughly 854 × 883 km, completing one revolution every 102.2 minutes — about 14.1 trips around Earth per day. The orbit is essentially circular (eccentricity 0.0020). Inclined 86.4° — nearly pole-to-pole — its ground track sweeps essentially every latitude. Its orbital plane crosses the equator northbound at right ascension 32.5°. Earth's equatorial bulge drifts that plane westward about 0.40° per day.
Orbital elements
| Orbit regime | low Earth orbit (LEO) |
|---|---|
| Perigee × apogee altitude | ~854 km × 883 km |
| Inclination | 86.41° |
| Orbital period | 102.2 min (14.09 rev/day) |
| Eccentricity | 0.00198 |
| Element set epoch | 2026-10-21 |
| COSPAR designation | 2021-076B |
| NORAD catalog number | 49113 |
This page's orbital elements come from the CelesTrak catalog of 2026-10-23. 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
PAYLOAD B is one of 4,802 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 PAYLOAD B from the ground?
Sometimes. Like most low-Earth-orbit spacecraft, PAYLOAD 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 the “When can I see it?” panel in the live view for when it is above your horizon and sunlit.
Related satellites
Nearest catalog neighbors of PAYLOAD B in the Other Active Satellites group — usually craft from the same or adjacent launches:
- RSW-01 (NORAD 49112)
- RSW-02 (NORAD 49114)
- TJS-7 (NORAD 49115)
- GAOFEN-5 02 (NORAD 49122)
- CHINASAT 9B (NORAD 49125)
- TIANHUI 2-02B (NORAD 49072)
Browse the Other Active Satellites directory or the full satellite directory.
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