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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
17 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 17 hours ago
0 COSMOS 203
1 03129U 68011A   25182.95357207 -.00000028  00000-0 -21551-4 0  9997
2 03129  74.0519 259.8919 0012074 170.7173   2.9348 13.18291217759828
Epoch: 2025-07-01T22:53Z
TLE epoch observation values (Epoch: 2025-07-01T22:53:08.626Z)
Latitude
6.02635°
Longitude
174.64434°
Altitude
1,184.014 km
Speed
7.267 km/s
True Right ascension
05h 12m 41s
True Declination
5° 59' 33"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
-41.10266°
Longitude
-170.3147°
Altitude
1,201.117 km
Speed
7.255 km/s
Apparent Right ascension
10h 01m 04s
Apparent Declination
-65° 37' 01"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
03:14:43
Azimuth
147.926° SSE
Elevation
-40.394°
Doppler factor
1
Orbital elements
Apogee altitude
1,198.145 km
Perigee altitude
1,179.872 km
Semi-major axis
7,567.146 km
Eccentricity
0.00121
Inclination
74.0519°
RAAN
259.8919°
Arg. of periapsis
170.7173°
True anomaly
Unknown
Mean anomaly
2.9348°
Eccentric anomaly
Unknown
Mean motion
3.2972 °/min
Orbital period
109.18 mins
BSTAR
-0.000021551
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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.
14 mins2025-07-02 16:48:29.802Z335.744° NNW2025-07-02 16:55:29.802Z250.759° W42.979°2025-07-02 17:02:29.802Z174.278° S
10 mins2025-07-03 05:05:29.802Z143.956° SSE2025-07-03 05:09:29.802Z102.246° ESE26.27°2025-07-03 05:15:29.802Z42.272° NE
12 mins2025-07-03 06:55:29.802Z224.955° SW2025-07-03 07:00:29.802Z283.793° WNW37.661°2025-07-03 07:07:29.802Z8.286° NNE
9 mins2025-07-03 14:39:29.802Z14.832° NNE2025-07-03 14:43:29.802Z52.653° ENE19.469°2025-07-03 14:48:29.802Z97.879° ESE
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