OKEAN-O

NORAD 25860· COSPAR 1999-039A· Active satellite· Other / Unclassified· SSO

Launch

Launched on Jul 17, 1999 from 45/1, Kazakhstan aboard a Zenit-2.

Zenit-2 | Okean-O →

Live · TLE epoch 2026-09-08 17:57 UTC

Orbit class

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

Operator

Russian / Soviet Government

Country

Russia

Manufacturer

—

Launched

Jul 17, 1999

Mass

—

Apogee

633 km

Perigee

630 km

Inclination

97.92°

Period

1.62 h

Altitude history

Apogee and perigee for OKEAN-O across 103 days of archived orbital elements (105 element sets, one per day).

Trend

Stable

Change

-0.3 km

Rate

-0.00 km/day

Now

630 × 633 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.

Launched with

One other catalogued object still in orbit from launch 1999-039 (Zenit-2 | Okean-O).

SL-16 R/B · 25861

Sources & further reading

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