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ZK-1A R/B — Live Satellite Tracking (NORAD 100789)

Track ZK-1A R/B (NORAD catalog number 100789) 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 K of 2026's 220th orbital launch (COSPAR designation 2026-220K). It went up together with 9 other satellites from that launch still in the active catalog.

Moving at about 7.84 km/s, ZK-1A R/B flies in low Earth orbit at an altitude of roughly 236 × 485 km, completing one revolution every 91.6 minutes — about 15.7 trips around Earth per day. The orbit is essentially circular (eccentricity 0.0185). Inclined 97.6° — nearly pole-to-pole — its ground track sweeps essentially every latitude. Its orbital plane crosses the equator northbound at right ascension 10.0°. Earth's equatorial bulge drifts that plane eastward about 1.09° per day.

Orbital elements

Orbit regime	low Earth orbit (LEO)
Perigee × apogee altitude	~236 km × 485 km
Inclination	97.57°
Orbital period	91.6 min (15.72 rev/day)
Eccentricity	0.01852
Element set epoch	2026-10-21
COSPAR designation	2026-220K
NORAD catalog number	100789

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

ZK-1A R/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 ZK-1A R/B from the ground?

Sometimes. Like most low-Earth-orbit spacecraft, ZK-1A R/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 ZK-1A R/B in the Other Active Satellites group — usually craft from the same or adjacent launches:

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