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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

17 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 17 hours ago

0 COSMOS 203
1 03129U 68011A   25182.95357207 -.00000028  00000-0 -21551-4 0  9997
2 03129  74.0519 259.8919 0012074 170.7173   2.9348 13.18291217759828

Epoch: 2025-07-01T22:53Z

TLE epoch observation values (Epoch: 2025-07-01T22:53:08.626Z)

Latitude

6.02635°

Longitude

174.64434°

Altitude

1,184.014 km

Speed

7.267 km/s

True Right ascension

05h 12m 41s

True Declination

5° 59' 33"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-41.10266°

Longitude

-170.3147°

Altitude

1,201.117 km

Speed

7.255 km/s

Apparent Right ascension

10h 01m 04s

Apparent Declination

-65° 37' 01"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

03:14:43

Azimuth

147.926° SSE

Elevation

-40.394°

Doppler factor

Orbital elements

Apogee altitude

1,198.145 km

Perigee altitude

1,179.872 km

Semi-major axis

7,567.146 km

Eccentricity

0.00121

Inclination

74.0519°

RAAN

259.8919°

Arg. of periapsis

170.7173°

True anomaly

Unknown

Mean anomaly

2.9348°

Eccentric anomaly

Unknown

Mean motion

3.2972 °/min

Orbital period

109.18 mins

BSTAR

-0.000021551

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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.
14 mins	2025-07-02 16:48:29.802Z	335.744° NNW	2025-07-02 16:55:29.802Z	250.759° W	42.979°	2025-07-02 17:02:29.802Z	174.278° S
10 mins	2025-07-03 05:05:29.802Z	143.956° SSE	2025-07-03 05:09:29.802Z	102.246° ESE	26.27°	2025-07-03 05:15:29.802Z	42.272° NE
12 mins	2025-07-03 06:55:29.802Z	224.955° SW	2025-07-03 07:00:29.802Z	283.793° WNW	37.661°	2025-07-03 07:07:29.802Z	8.286° NNE
9 mins	2025-07-03 14:39:29.802Z	14.832° NNE	2025-07-03 14:43:29.802Z	52.653° ENE	19.469°	2025-07-03 14:48:29.802Z	97.879° ESE

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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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