COSMOS 2144, 21300
Orbit data source: Space-Track
COSMOS 2144, 21300 is a payload satellite owned by UNKS RF (CIS) in LEO that was launched on Thu, 16 May 1991 UTC via a TSIKLON-3 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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21300 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CISRelated business
Manufacturer
NPO PM
Mission
Defense Communications
Bus & Motor
STRELA-3, Unknown motor
Mass
225 kg wet, 225 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl, 0.8 m
Radar Cross Section
1.257 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 COSMOS 2144
1 21300U 91033B 25273.59849782 .00000030 00000-0 10943-3 0 9996
2 21300 82.5763 135.0848 0005056 350.2439 9.8553 12.62383924583703Epoch: 2025-09-30T14:21Z
TLE epoch observation values (Epoch: 2025-09-30T14:21:50.211Z)
Latitude
-0.00004°
Longitude
-89.95998°
Altitude
1,411.968 km
Speed
7.156 km/s
True Right ascension
09h 00m 20s
True Declination
0° 00' 00"
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
14:45:50
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,414.379 km
Perigee altitude
1,406.503 km
Semi-major axis
7,788.578 km
Eccentricity
0.00051
Inclination
82.5763°
RAAN
135.0848°
Arg. of periapsis
350.2439°
True anomaly
9.86522°
Mean anomaly
9.8553°
Eccentric anomaly
9.86026°
Mean motion
3.15759 °/min
Orbital period
114.01 mins
BSTAR
0.00010943
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Other satellites on launch #33 in the year 1991 (1991-05-16 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 2144 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2025-10-01 00:31:52.146Z | 43.754° NE | 2025-10-01 00:33:52.146Z | 58.341° ENE | 11.629° | 2025-10-01 00:35:52.146Z | 72.924° E |
| 15 mins | 2025-10-01 02:23:52.146Z | 0.048° NNE | 2025-10-01 02:30:52.146Z | 89.371° E | 42.483° | 2025-10-01 02:38:52.146Z | 161.921° S |
| 11 mins | 2025-10-01 04:19:52.146Z | 321.051° NNW | 2025-10-01 04:24:52.146Z | 278.371° WNW | 22.409° | 2025-10-01 04:30:52.146Z | 230.369° WSW |
| 15 mins | 2025-10-01 15:10:52.146Z | 171.496° S | 2025-10-01 15:17:52.146Z | 102.831° ESE | 42.602° | 2025-10-01 15:25:52.146Z | 13.441° NNE |
| 11 mins | 2025-10-01 17:08:52.146Z | 248.898° W | 2025-10-01 17:13:52.146Z | 293.346° NW | 22.903° | 2025-10-01 17:19:52.146Z | 342.569° N |
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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