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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Edit Public Description
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: 23 hours ago
TLE from 23 hours ago
0 COSMOS 203
1 03129U 68011A 25341.06140226 -.00000027 00000-0 -19332-4 0 9990
2 03129 74.0537 22.3590 0013301 259.0090 122.6888 13.18297562780663Epoch: 2025-12-07T01:28Z
TLE epoch observation values (Epoch: 2025-12-07T01:28:25.155Z)
Latitude
20.95933°
Longitude
-69.57437°
Altitude
1,198.833 km
Speed
7.254 km/s
True Right ascension
01h 54m 26s
True Declination
20° 51' 05"
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
22:12:02
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,199.049 km
Perigee altitude
1,178.919 km
Semi-major axis
7,567.121 km
Eccentricity
0.00133
Inclination
74.0537°
RAAN
22.359°
Arg. of periapsis
259.009°
True anomaly
122.81696°
Mean anomaly
122.6888°
Eccentric anomaly
122.75289°
Mean motion
3.29721 °/min
Orbital period
109.18 mins
BSTAR
-0.000019332
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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. |
|---|---|---|---|---|---|---|---|
| 12 mins | 2025-12-08 02:57:28.539Z | 155.328° SSE | 2025-12-08 03:03:28.539Z | 97.041° ESE | 28.168° | 2025-12-08 03:09:28.539Z | 39.194° NE |
| 12 mins | 2025-12-08 04:49:28.539Z | 229.764° WSW | 2025-12-08 04:54:28.539Z | 293.632° NW | 36.35° | 2025-12-08 05:01:28.539Z | 8.15° NNE |
| 9 mins | 2025-12-08 12:33:28.539Z | 16.21° NNE | 2025-12-08 12:37:28.539Z | 55.983° ENE | 20.965° | 2025-12-08 12:42:28.539Z | 101.428° ESE |
| 13 mins | 2025-12-08 14:23:28.539Z | 336.11° NNW | 2025-12-08 14:29:28.539Z | 253.898° W | 43.846° | 2025-12-08 14:36:28.539Z | 171.707° S |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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