COSMOS 2546 (EKS 4)

NORAD 45608· COSPAR 2020-031A· Active satellite· Military & Reconnaissance· HEO

Launch

Launched on May 22, 2020 from 43/4 (43R), Russia aboard a Soyuz 2.1b Fregat.

Soyuz 2.1b/Fregat | EKS 4 (Tundra 4) (Kosmos 2546) →

GLONASS satellite (representative) — Representative GLONASS image · Patrick G. · CC BY-SA 2.0 · via Wikimedia Commons

Live · TLE epoch 2026-08-31 07:05 UTC

Orbit class

HEO — Highly Elliptical (Molniya, Tundra, GTO)

Operator

Russia / Soviet Union (military)

Country

Russia

Manufacturer

—

Launched

May 22, 2020

Mass

—

Apogee

39,084 km

Perigee

1,290 km

Inclination

63.16°

Period

11.96 h

Part of the GLONASS constellation · this satellite is one of 758

Russian satellite navigation system. ~24 active sats in MEO at ~19,100 km.

See all GLONASS satellites →

Altitude history

Apogee and perigee for COSMOS 2546 (EKS 4) across 14 days of archived orbital elements (15 element sets, one per day).

Trend

Stable

Change

+0.6 km

Rate

+0.04 km/day

Now

1290 × 39084 km

Apogee Perigee

Derived from our own archive of CelesTrak orbital elements, sampled every 3 hours. Short windows show drag and station-keeping; they are not a reentry prediction.

Related satellites

Sources & further reading

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