Home › Other Active Satellites › COSMOS 2504
COSMOS 2504 — Live Satellite Tracking (NORAD 40555)
Track COSMOS 2504 (NORAD catalog number 40555) 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 D of 2015's 20th orbital launch (COSPAR designation 2015-020D). It went up together with 3 other satellites from that launch still in the active catalog. As of this element set it had completed roughly 56,268 revolutions of Earth.
Its speed swings from 6.90 km/s at apogee to 7.80 km/s at perigee. COSMOS 2504 flies in low Earth orbit at an altitude of roughly 587 × 1,489 km, completing one revolution every 105.8 minutes — about 13.6 trips around Earth per day. The orbit is mildly elliptical (eccentricity 0.0609), so its altitude varies between 587 km and 1,489 km over each revolution. Inclined 82.5° — nearly pole-to-pole — its ground track sweeps essentially every latitude. Its orbital plane crosses the equator northbound at right ascension 160.4°. Earth's equatorial bulge drifts that plane westward about 0.77° per day.
Orbital elements
| Orbit regime | low Earth orbit (LEO) |
|---|---|
| Perigee × apogee altitude | ~587 km × 1,489 km |
| Inclination | 82.52° |
| Orbital period | 105.8 min (13.61 rev/day) |
| Eccentricity | 0.06088 |
| Element set epoch | 2026-09-16 |
| COSPAR designation | 2015-020D |
| NORAD catalog number | 40555 |
This page's orbital elements come from the CelesTrak catalog of 2026-09-17. 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
COSMOS 2504 is one of 4,464 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 COSMOS 2504 from the ground?
Sometimes. Like most low-Earth-orbit spacecraft, COSMOS 2504 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 pass predictions for your location are available on this page once you select the satellite and share your position for when it is above your horizon and sunlit.
Related satellites
Nearest catalog neighbors of COSMOS 2504 in the Other Active Satellites group — usually craft from the same or adjacent launches:
- GONETS-M 13 (NORAD 40554)
- GONETS-M 12 (NORAD 40553)
- GONETS-M 11 (NORAD 40552)
- KOMPSAT-3A (NORAD 40536)
- EXPRESS-AM7 (NORAD 40505)
- THOR 7 (NORAD 40613)
Browse the Other Active Satellites directory or the full satellite directory.
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