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: 4 hours ago
TLE from 4 hours ago
0 COSMOS 203
1 3129U 68011A 25311.80116163 .00000144 00000-0 41531-3 0 9995
2 3129 74.0527 66.3160 0013030 305.8635 220.4332 13.18296438776800Epoch: 2025-11-07T19:13Z
TLE epoch observation values (Epoch: 2025-11-07T19:13:40.364Z)
Latitude
13.23124°
Longitude
-93.17498°
Altitude
1,200.474 km
Speed
7.251 km/s
True Right ascension
16h 09m 55s
True Declination
13° 09' 33"
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
19:22:15
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,198.849 km
Perigee altitude
1,179.129 km
Semi-major axis
7,567.126 km
Eccentricity
0.0013
Inclination
74.0527°
RAAN
66.316°
Arg. of periapsis
305.8635°
True anomaly
220.33648°
Mean anomaly
220.4332°
Eccentric anomaly
220.38483°
Mean motion
3.29721 °/min
Orbital period
109.18 mins
BSTAR
0.00041531
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-11-08 07:16:07.213Z | 121.904° SE | 2025-11-08 07:20:07.213Z | 87.294° E | 15.192° | 2025-11-08 07:23:07.213Z | 61.604° ENE |
| 13 mins | 2025-11-08 09:04:07.213Z | 199.561° SSW | 2025-11-08 09:10:07.213Z | 294.884° NW | 44.913° | 2025-11-08 09:17:07.213Z | 18.06° NNE |
| 8 mins | 2025-11-08 10:59:07.213Z | 277.892° WNW | 2025-11-08 11:02:07.213Z | 304.514° NW | 16.483° | 2025-11-08 11:07:07.213Z | 347.951° N |
| 13 mins | 2025-11-08 18:39:07.213Z | 349.884° N | 2025-11-08 18:45:07.213Z | 67.46° ENE | 41.465° | 2025-11-08 18:52:07.213Z | 147.552° SSE |
| 9 mins | 2025-11-08 20:32:07.213Z | 303.771° NW | 2025-11-08 20:36:07.213Z | 262.829° W | 22.104° | 2025-11-08 20:41:07.213Z | 217.812° SW |
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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