COSMOS 2169, 21783
Orbit data source: Space-Track
COSMOS 2169, 21783 is a payload satellite owned by UNKS RF (CIS) in LEO that was launched on Tue, 12 Nov 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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21783 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: 18 hours ago
TLE from 18 hours ago
0 COSMOS 2169
1 21783U 91077E 25340.42446570 .00000028 00000-0 90978-4 0 9998
2 21783 82.6031 331.9812 0018829 53.2805 307.0014 12.66308857574390Epoch: 2025-12-06T10:11Z
TLE epoch observation values (Epoch: 2025-12-06T10:11:13.836Z)
Latitude
-0.00008°
Longitude
103.72114°
Altitude
1,390.954 km
Speed
7.168 km/s
True Right ascension
22h 07m 55s
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
02:34:14
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,408.961 km
Perigee altitude
1,379.692 km
Semi-major axis
7,772.464 km
Eccentricity
0.00188
Inclination
82.6031°
RAAN
331.9812°
Arg. of periapsis
53.2805°
True anomaly
306.82884°
Mean anomaly
307.0014°
Eccentric anomaly
306.91515°
Mean motion
3.16742 °/min
Orbital period
113.66 mins
BSTAR
0.000090978
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Other satellites on launch #77 in the year 1991 (1991-11-12 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 2169 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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2025-12-07 09:33:54.020Z | 27.642° NE | 2025-12-07 09:38:54.020Z | 67.163° ENE | 16.62° | 2025-12-07 09:42:54.020Z | 98.166° ESE |
| 14 mins | 2025-12-07 11:27:54.020Z | 352.838° N | 2025-12-07 11:33:54.020Z | 358.88° N | 44.82° | 2025-12-07 11:41:54.020Z | 174.512° S |
| 7 mins | 2025-12-07 13:24:54.020Z | 304.817° NW | 2025-12-07 13:27:54.020Z | 280.453° WNW | 15.769° | 2025-12-07 13:31:54.020Z | 250.015° W |
| 7 mins | 2025-12-07 22:22:54.020Z | 101.634° ESE | 2025-12-07 22:25:54.020Z | 77.968° E | 14.978° | 2025-12-07 22:29:54.020Z | 47.288° ENE |
| 14 mins | 2025-12-08 00:12:54.020Z | 184.107° SSW | 2025-12-08 00:18:54.020Z | 172.408° S | 44.71° | 2025-12-08 00:26:54.020Z | 8.101° NNE |
| 8 mins | 2025-12-08 02:11:54.020Z | 269.405° W | 2025-12-08 02:14:54.020Z | 294.47° NW | 17.077° | 2025-12-08 02:19:54.020Z | 334.019° NNW |
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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