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ECHOSTAR 21 — Live Satellite Tracking (NORAD 42749)

Track ECHOSTAR 21 (NORAD catalog number 42749) 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 2017, launched on the 32nd orbital launch of that year (COSPAR designation 2017-032A). As of this element set it had completed roughly 3,436 revolutions of Earth.

Moving at about 3.08 km/s, ECHOSTAR 21 sits in the geostationary belt roughly 35,786 km above the equator, where its 23.9-hour orbit matches Earth's rotation — seen from the ground it stays parked over the same longitude around the clock. The orbit is essentially circular (eccentricity 0.0002). Its near-equatorial 1.8° inclination keeps it above the tropics at all times. Its orbital plane crosses the equator northbound at right ascension 3.7°.

Orbital elements

Orbit regime	geostationary/geosynchronous orbit (GEO)
Perigee × apogee altitude	~35,784 km × 35,804 km
Inclination	1.79°
Orbital period	1436.1 min (1.00 rev/day)
Eccentricity	0.00024
Element set epoch	2026-10-21
COSPAR designation	2017-032A
NORAD catalog number	42749

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

ECHOSTAR 21 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 ECHOSTAR 21 from the ground?

Not with the naked eye. At its altitude ECHOSTAR 21 is far beyond unaided visibility — following satellites this high takes a telescope and good timing. You can still track it precisely in the live 3D view above, or check the “When can I see it?” panel in the live view.

Related satellites

Nearest catalog neighbors of ECHOSTAR 21 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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