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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3129 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
OKB-10
Mission
Spacecraft
Bus & Motor
KAUR-1 11F621, Unknown motor
Mass
800 kg wet, 800 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 COSMOS 203
1 03129U 68011A 26135.19866559 .00000045 00000-0 16362-3 0 9997
2 03129 74.0493 143.2738 0012513 342.4770 94.6819 13.18303218801636Epoch: 2026-05-15T04:46Z
TLE epoch observation values (Epoch: 2026-05-15T04:46:04.706Z)
Latitude
69.80039°
Longitude
-110.56367°
Altitude
1,203.708 km
Speed
7.258 km/s
True Right ascension
12h 55m 33s
True Declination
69° 41' 43"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
16:34:35
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,198.432 km
Perigee altitude
1,179.494 km
Semi-major axis
7,567.1 km
Eccentricity
0.00125
Inclination
74.0493°
RAAN
143.2738°
Arg. of periapsis
342.477°
True anomaly
94.82479°
Mean anomaly
94.6819°
Eccentric anomaly
94.75335°
Mean motion
3.29723 °/min
Orbital period
109.18 mins
BSTAR
0.00016362
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Other satellites on launch #11 in the year 1968 (1968-02-20 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.COSMOS 203 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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2026-05-16 10:04:51.407Z | 7.375° NNE | 2026-05-16 10:09:51.407Z | 50.95° ENE | 19.548° | 2026-05-16 10:14:51.407Z | 96.558° ESE |
| 12 mins | 2026-05-16 11:56:51.407Z | 337.752° N | 2026-05-16 12:01:51.407Z | 297.377° NW | 44.202° | 2026-05-16 12:08:51.407Z | 168.566° S |
| 4 mins | 2026-05-16 13:50:51.407Z | 284.429° WNW | 2026-05-16 13:52:51.407Z | 267.728° W | 11.961° | 2026-05-16 13:54:51.407Z | 251.52° W |
| 9 mins | 2026-05-17 00:12:51.407Z | 135.951° SSE | 2026-05-17 00:16:51.407Z | 95.135° ESE | 22.792° | 2026-05-17 00:21:51.407Z | 47.601° ENE |
| 13 mins | 2026-05-17 02:01:51.407Z | 216.728° SW | 2026-05-17 02:07:51.407Z | 298.89° NW | 40.672° | 2026-05-17 02:14:51.407Z | 12.091° NNE |
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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