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TIANYI-51 — Live Satellite Tracking (NORAD 100741)

Track TIANYI-51 (NORAD catalog number 100741) 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 2026, launched on the 215th orbital launch of that year (COSPAR designation 2026-215A). It went up together with 1 other satellite from that launch still in the active catalog.

Moving at about 7.61 km/s, TIANYI-51 flies in low Earth orbit at an altitude of roughly 512 × 516 km, completing one revolution every 94.8 minutes — about 15.2 trips around Earth per day. The orbit is essentially circular (eccentricity 0.0003). Inclined 55.0° to the equator, it overflies every latitude up to about 55° north and south. Its orbital plane crosses the equator northbound at right ascension 203.6°. Earth's equatorial bulge drifts that plane westward about 4.37° per day.

Orbital elements

Orbit regime	low Earth orbit (LEO)
Perigee × apogee altitude	~512 km × 516 km
Inclination	55.02°
Orbital period	94.8 min (15.20 rev/day)
Eccentricity	0.00028
Element set epoch	2026-10-21
COSPAR designation	2026-215A
NORAD catalog number	100741

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

TIANYI-51 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 TIANYI-51 from the ground?

Sometimes. Like most low-Earth-orbit spacecraft, TIANYI-51 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 TIANYI-51 in the Other Active Satellites group — usually craft from the same or adjacent launches:

Browse the Other Active Satellites directory or the full satellite directory.

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