LowEarth

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 2026-09-09 03:41 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
632633630May 28Sep 9
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).

Sources & further reading

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