LowEarth

OKEAN-3

NORAD 21397· COSPAR 1991-039A· Active satellite· Other / Unclassified· LEO
Launch
Launched on Jun 4, 1991 from 32/2, Russia aboard a Tsiklon-3.
Tsiklon-3 | Okean-O1 6 →
Live · TLE epoch 2026-10-24 04:58 UTC
Orbit class
LEO — Low Earth Orbit (circular, < 2,000 km)
Operator
Russian / Soviet Government
Country
Russia
Manufacturer
—
Launched
Jun 4, 1991
Mass
—
Apogee
562 km
Perigee
545 km
Inclination
82.51°
Period
1.59 h

Altitude history

Apogee and perigee for OKEAN-3 across 149 days of archived orbital elements (151 element sets, one per day).

Trend
Decaying
Change
-1.8 km
Rate
-0.01 km/day
Now
545 × 562 km
554565542May 28Oct 25
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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