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COSMOS 203, 3129

Orbit data source: Space-Track

COSMOS 203, 3129 is a payload satellite owned by OKB-10 (CIS) in LEO that was launched on Tue, 20 Feb 1968 UTC via a KOSMOS 11K65M launch vehicle from the Plesetsk Missile And Space Complex (PKMTR). 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/3129?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/3129?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

3129, 1968-011A

Orbit

LEO

Last TLE update

21 hours ago

Origin

Federal Space Agency of Russia (Roscosmos) (CIS)

Manufacturer

OKB-10

Mission

Defense Geodetic

Bus & Motor

KAUR-1 11F621, Unknown motor

Mass

800 kg wet, 800 kg dry

Launch date (UTC)

1968-02-20 (57 years ago)

Launch vehicle

KOSMOS 11K65M

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl + 1 Rod, 17 m

Radar Cross Section

6.283 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 21 hours ago

0 COSMOS 203
1 03129U 68011A   25191.59037237 -.00000188  00000-0 -43031-3 0  9998
2 03129  74.0507 246.9166 0011877 155.9323 311.9624 13.18291736760961

Epoch: 2025-07-10T14:10Z

TLE epoch observation values (Epoch: 2025-07-10T14:10:08.172Z)

Latitude

66.36984°

Longitude

-114.90571°

Altitude

1,196.36 km

Speed

7.265 km/s

True Right ascension

01h 45m 31s

True Declination

66° 15' 02"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-19.6088°

Longitude

98.48699°

Altitude

1,207.24 km

Speed

7.246 km/s

Apparent Right ascension

14h 16m 46s

Apparent Declination

-32° 47' 13"

Sunlit

Object is in full shadow

Visualization observer readout

Local Sidereal Time

23:40:32

Azimuth

270.385° WNW

Elevation

-58.014°

Doppler factor

Orbital elements

Apogee altitude

1,197.994 km

Perigee altitude

1,180.019 km

Semi-major axis

7,567.144 km

Eccentricity

0.00119

Inclination

74.0507°

RAAN

246.9166°

Arg. of periapsis

155.9323°

True anomaly

Unknown

Mean anomaly

311.9624°

Eccentric anomaly

Unknown

Mean motion

3.2972 °/min

Orbital period

109.18 mins

BSTAR

-0.00043031

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Other satellites on launch #11 in the year 1968 (1968-02-20 UTC)

SL-8 R/B, 3131

SL-8 DEB, 3147 (Decayed)

COSMOS 203 Visibility forecast

Observer location: undefined°, undefined°

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.
12 mins	2025-07-11 13:52:30.746Z	1.182° NNE	2025-07-11 13:58:30.746Z	64.894° ENE	28.545°	2025-07-11 14:04:30.746Z	121.784° SE
12 mins	2025-07-11 15:44:30.746Z	324.298° NNW	2025-07-11 15:49:30.746Z	264.507° W	36.311°	2025-07-11 15:56:30.746Z	188.336° SSW
12 mins	2025-07-12 03:58:30.746Z	164.29° S	2025-07-12 04:04:30.746Z	92.606° ESE	34.322°	2025-07-12 04:10:30.746Z	33.433° NE
11 mins	2025-07-12 05:50:30.746Z	241.112° WSW	2025-07-12 05:55:30.746Z	297.576° NW	30.6°	2025-07-12 06:01:30.746Z	0.931° NNE

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Check out COSMOS 203, 3129 on other resources

View COSMOS 203, 3129 on NASA - NSSDCA Website

View COSMOS 203, 3129 on Heavens-Above

View COSMOS 203, 3129 on Keep Track

View COSMOS 203, 3129 on Celestrak

View COSMOS 203, 3129 on Gunter's Space Page

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