OKEAN 3

Satellite information

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Satellite Type and Status

PAYLOADIN ORBIT

Key statistics

Satellite OKEAN 3 at a glance.

Uptime

12563

Days in orbit

Revolutions

≈ 15.0

Per day

Orbit

LEO

Low Earth Orbit

Inclination

82.5

Latest

Satellite identification and parameters

Extended collection of information and parameters for OKEAN 3.

Object identification

Identified? True

Debris? False

Object name: OKEAN 3

International designator: 1991-039A

Object number (NORAD): 21397

Object ID (CCSDS): 21397

Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)

Current information (Y/N): Y

RCS size: LARGE

Orbital parameters

Period: 95.768 minutes

Inclination: 82.5145 deg

SMA: 6933.817 km

Apoapsis: 566.583 km

Periapsis: 544.781 km

RAAN: 107.3269 deg

Eccentricy: 0.00157217

Argument of periapsis: 71.6474 deg

Mean anomaly: 288.6461 deg

Mean motion: 15.03641033 rev/day

Mean motion (dot): 0.00003856 rev/day²

B* drag term: 0.00027917184 1/R_Earth

Two-line elements (TLE)

Creation date: Oct. 26, 2025, 2:54 a.m.

Reference frame: TEME

Reference center: EARTH

Epoch: Oct. 25, 2025, 9:48 p.m. UTC

TLE line 0: 0 OKEAN 3

TLE line 1: 1 21397U 91039A 25298.90894840 .00003856 00000-0 27917-3 0 9993

TLE line 2: 2 21397 82.5145 107.3269 0015722 71.6474 288.6461 15.03641033844774

Live tracking on map

Real-time ground track for satellite OKEAN 3.

In-orbit conjunctions

A list of the most updated potential collisions computed for object OKEAN 3.

Target	Orbit	TCA	Probability of collision	Miss distance	Type
SWAS	LEO	2025-09-25 12:20:39	0.0004068944	514.0 (m)	PAYLOAD
FENGYUN 1C DEB	SSO	2025-02-19 22:07:21	0.0001110648	819.0 (m)	DEBRIS
COSMOS 2251 DEB	LEO	2024-12-21 05:46:45	0.0005686061	528.0 (m)	DEBRIS

Associated space launch

Ocean observation satellite

OKEAN 3 was lifted into orbit during the mission ‘Tsiklon-3 | Okean-O1 6’, on board a Tsiklon-3 space rocket.

The launch took place on June 4, 1991, 8:10 a.m. from 32/2.

For more information about the launch, click the button.

Tsiklon-3 | Okean-O1 6

Agency: N/A

Status: Launch Successful

Launch date: June 4, 1991, 8:10 a.m. UTC

Rocket: Tsiklon-3

Launch pad: 32/2

Location: Plesetsk Cosmodrome, Russian Federation

...

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