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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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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   25129.07512623  .00000210  00000-0  58376-3 0  9991
2 03129  74.0529 340.8406 0012872 259.3710 267.2798 13.18289720752721

Epoch: 2025-05-09T01:48Z

Definitive object data (Epoch: 2025-05-09T01:48:10.906Z)

Latitude

12.93843°

Longitude

-97.0862°

Altitude

1,193.457 km

Speed

7.258 km/s

True Right ascension

10h 28m 22s

True Declination

12° 52' 04"

Sunlit

Object was in daylight at TLE epoch

Visualization TLE readout

Latitude

67.07836°

Longitude

127.56788°

Altitude

1,212.215 km

Speed

7.25 km/s

Apparent Right ascension

21h 28m 29s

Apparent Declination

27° 02' 21"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

07:22:39

Azimuth

330.93° NNW

Elevation

-16.92°

Doppler factor

Orbital elements

Apogee altitude

1,198.755 km

Perigee altitude

1,179.274 km

Semi-major axis

7,567.151 km

Eccentricity

0.0012872

Inclination

74.0529°

RAAN

340.8406°

Arg. of periapsis

259.371°

True anomaly

267.13248°

Mean anomaly

267.2798°

Eccentric anomaly

267.20614°

Mean motion

3.29719 °/min

BSTAR

0.00058376

Orbital period

109.18 mins

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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.
8 mins	2025-05-09 23:23:04.177Z	14.223° NNE	2025-05-09 23:27:04.177Z	47.668° ENE	15.212°	2025-05-09 23:31:04.177Z	81.968° E
13 mins	2025-05-10 01:14:04.177Z	344.887° N	2025-05-10 01:20:04.177Z	86.438° E	44.356°	2025-05-10 01:27:04.177Z	157.156° SSE
7 mins	2025-05-10 03:07:04.177Z	298.301° NW	2025-05-10 03:10:04.177Z	271.18° WNW	17.11°	2025-05-10 03:14:04.177Z	235.024° WSW
7 mins	2025-05-10 13:32:04.177Z	116.64° SE	2025-05-10 13:35:04.177Z	88.217° E	17.102°	2025-05-10 13:39:04.177Z	54.273° ENE
13 mins	2025-05-10 15:19:04.177Z	203.706° SW	2025-05-10 15:25:04.177Z	279.101° WNW	44.404°	2025-05-10 15:32:04.177Z	16.272° NNE
6 mins	2025-05-10 17:15:04.177Z	286.046° WNW	2025-05-10 17:18:04.177Z	312.874° NW	15.273°	2025-05-10 17:21:04.177Z	338.964° N
5 mins	2025-05-10 23:05:04.177Z	27.689° NE	2025-05-10 23:07:04.177Z	44.666° NE	13.215°	2025-05-10 23:10:04.177Z	70.043° E

Authenticating...

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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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