COSMOS 2503

NORAD 40420· COSPAR 2015-009A· Active satellite· Military & Reconnaissance· SSO

Launch

Launched on Feb 27, 2015 from 43/4 (43R), Russia aboard a Soyuz 2.1a.

Soyuz 2.1a | Bars-M (Kosmos 2503) →

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

Live · TLE epoch 2026-10-23 18:23 UTC

Orbit class

SSO — Sun-Synchronous (LEO at 96–102° inclination)

Operator

Russia / Soviet Union (military)

Country

Russia

Manufacturer

—

Launched

Feb 27, 2015

Mass

—

Apogee

561 km

Perigee

539 km

Inclination

97.82°

Period

1.59 h

Part of the GLONASS constellation · this satellite is one of 761

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

See all GLONASS satellites →

Altitude history

Apogee and perigee for COSMOS 2503 across 59 days of archived orbital elements (60 element sets, one per day).

Trend

Stable

Change

-0.4 km

Rate

-0.01 km/day

Now

539 × 561 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.

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Sources & further reading

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