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MMS 3 — Live Satellite Tracking (NORAD 40484)
Track MMS 3 (NORAD catalog number 40484) 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 C of 2015's 11th orbital launch (COSPAR designation 2015-011C). It went up together with 3 other satellites from that launch still in the active catalog.
Its speed swings from 0.62 km/s at apogee to 6.54 km/s at perigee. MMS 3 follows a highly elliptical orbit, completing a revolution every 84.7 hours. The orbit is strongly elliptical (eccentricity 0.8264): each revolution swings from 10,630 km at perigee out to 172,435 km at apogee. Inclined 73.0° to the equator, it overflies every latitude up to about 73° north and south. Its orbital plane crosses the equator northbound at right ascension 347.8°.
Orbital elements
| Orbit regime | highly elliptical orbit (HEO) |
|---|---|
| Perigee × apogee altitude | ~10,630 km × 172,435 km |
| Inclination | 72.97° |
| Orbital period | 5081.1 min (0.28 rev/day) |
| Eccentricity | 0.82635 |
| Element set epoch | 2026-09-07 |
| COSPAR designation | 2015-011C |
| NORAD catalog number | 40484 |
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
MMS 3 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 MMS 3 from the ground?
Not with the naked eye. At its altitude MMS 3 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 pass predictions for your location.
Related satellites
Nearest catalog neighbors of MMS 3 in the Other Active Satellites group — usually craft from the same or adjacent launches:
- MMS 2 (NORAD 40483)
- MMS 4 (NORAD 40485)
- MMS 1 (NORAD 40482)
- EXPRESS-AM7 (NORAD 40505)
- KOMPSAT-3A (NORAD 40536)
- EUTELSAT 115 WEST B (NORAD 40425)
Browse the Other Active Satellites directory or the full satellite directory · What is a TLE? · WatchSat live globe