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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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Identifier
3129, 1968-011A
Orbit
LEO
Last TLE update
21 hours ago
Origin
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   25191.59037237 -.00000188  00000-0 -43031-3 0  9998
2 03129  74.0507 246.9166 0011877 155.9323 311.9624 13.18291736760961
Epoch: 2025-07-10T14:10Z
TLE epoch observation values (Epoch: 2025-07-10T14:10:08.172Z)
Latitude
66.36984°
Longitude
-114.90571°
Altitude
1,196.36 km
Speed
7.265 km/s
True Right ascension
01h 45m 31s
True Declination
66° 15' 02"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
-19.6088°
Longitude
98.48699°
Altitude
1,207.24 km
Speed
7.246 km/s
Apparent Right ascension
14h 16m 46s
Apparent Declination
-32° 47' 13"
Sunlit
Object is in full shadow
Visualization observer readout
Local Sidereal Time
23:40:32
Azimuth
270.385° WNW
Elevation
-58.014°
Doppler factor
1
Orbital elements
Apogee altitude
1,197.994 km
Perigee altitude
1,180.019 km
Semi-major axis
7,567.144 km
Eccentricity
0.00119
Inclination
74.0507°
RAAN
246.9166°
Arg. of periapsis
155.9323°
True anomaly
Unknown
Mean anomaly
311.9624°
Eccentric anomaly
Unknown
Mean motion
3.2972 °/min
Orbital period
109.18 mins
BSTAR
-0.00043031
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Other satellites on launch #11 in the year 1968 (1968-02-20 UTC)

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.
12 mins2025-07-11 13:52:30.746Z1.182° NNE2025-07-11 13:58:30.746Z64.894° ENE28.545°2025-07-11 14:04:30.746Z121.784° SE
12 mins2025-07-11 15:44:30.746Z324.298° NNW2025-07-11 15:49:30.746Z264.507° W36.311°2025-07-11 15:56:30.746Z188.336° SSW
12 mins2025-07-12 03:58:30.746Z164.29° S2025-07-12 04:04:30.746Z92.606° ESE34.322°2025-07-12 04:10:30.746Z33.433° NE
11 mins2025-07-12 05:50:30.746Z241.112° WSW2025-07-12 05:55:30.746Z297.576° NW30.6°2025-07-12 06:01:30.746Z0.931° NNE
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