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OKEAN O, 25860

Orbit data source: Space-Track

OKEAN O, 25860 is a Commonwealth of Independent States-origin payload satellite in SSO that was launched on Sat, 17 Jul 1999 UTC via a ZENIT-2 launch vehicle from the Tyuratam Missile And Space Complex (TTMTR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.

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<iframe src="https://www.satcat.com/sats-embedded/25860?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/25860?theme=dark&initialShowStats=false

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Identifier

25860, 1999-039A

Orbit

SSO

Country

CIS

Related business

Federal Service for Hydrometeorology and Environmental Monitoring (RU)

Manufacturer

Yuzhnoe

Mission

Civil Imaging

Bus & Motor

OKEAN-O, AOCS 10X30N

Mass

6,300 kg wet, ~6,000 kg dry

Launch date (UTC)

1999-07-17 (27 years ago)

Launch vehicle

ZENIT-2

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl + 1 Pan, 5.3 m

Radar Cross Section

16.258 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 14 hours ago

TLE from 14 hours ago

0 OKEAN O
1 25860U 99039A   26154.15412019  .00000690  00000-0  97007-4 0  9994
2 25860  97.9321 213.1125 0001902  83.4280 276.7148 14.80448858447039

Epoch: 2026-06-03T03:41Z

TLE epoch observation values (Epoch: 2026-06-03T03:41:55.984Z)

Latitude

-0.00007°

Longitude

-93.98757°

Altitude

630.773 km

Speed

7.543 km/s

True Right ascension

14h 12m 27s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

03:42:40

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

626.281 km

Perigee altitude

623.617 km

Semi-major axis

7,003.086 km

Eccentricity

0.00019

Inclination

97.9321°

RAAN

213.1125°

Arg. of periapsis

83.428°

True anomaly

276.69315°

Mean anomaly

276.7148°

Eccentric anomaly

276.70398°

Mean motion

3.70347 °/min

Orbital period

97.21 mins

BSTAR

0.000097007

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Other satellites on launch #39 in the year 1999 (1999-07-17 UTC)

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OKEAN O Visibility forecast

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Span	Click to sort rows by Start time (UTC) header in descending order	Start Az.	Max El. time (UTC)	Max El. Az.	Max El.	End time (UTC)	End Az.
7 mins	2026-06-04 04:09:20.463Z	179.497° S	2026-06-04 04:12:20.463Z	238.666° WSW	41.703°	2026-06-04 04:16:20.463Z	339.806° N
5 mins	2026-06-04 15:59:20.463Z	58.774° ENE	2026-06-04 16:01:20.463Z	96.841° ESE	21.726°	2026-06-04 16:04:20.463Z	145.201° SSE
5 mins	2026-06-04 17:35:20.463Z	334.802° NNW	2026-06-04 17:37:20.463Z	294.349° NW	25.767°	2026-06-04 17:40:20.463Z	238.043° WSW

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out OKEAN O, 25860 on other resources

View OKEAN O, 25860 on NASA - NSSDCA Website

View OKEAN O, 25860 on Heavens-Above

View OKEAN O, 25860 on Keep Track

View OKEAN O, 25860 on Celestrak

View OKEAN O, 25860 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

OKEAN O, 25860

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 14 hours ago

TLE from 14 hours ago

TLE epoch observation values (Epoch: 2026-06-03T03:41:55.984Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #39 in the year 1999 (1999-07-17 UTC)

OKEAN O Visibility forecast

Co-orbital & Co-planar RSOs

Check out OKEAN O, 25860 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 14 hours ago