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: 8 hours ago
TLE from 8 hours ago
0 COSMOS 2169
1 21783U 91077E 25358.91259889 .00000041 00000-0 15796-3 0 9995
2 21783 82.6046 320.1336 0018278 12.4902 347.6641 12.66309623576738Epoch: 2025-12-24T21:54Z
TLE epoch observation values (Epoch: 2025-12-24T21:54:08.544Z)
Latitude
0.00002°
Longitude
-102.07718°
Altitude
1,385.861 km
Speed
7.173 km/s
True Right ascension
21h 20m 32s
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
04:54:12
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,408.53 km
Perigee altitude
1,380.117 km
Semi-major axis
7,772.46 km
Eccentricity
0.00183
Inclination
82.6046°
RAAN
320.1336°
Arg. of periapsis
12.4902°
True anomaly
347.61925°
Mean anomaly
347.6641°
Eccentric anomaly
347.64169°
Mean motion
3.16742 °/min
Orbital period
113.66 mins
BSTAR
0.00015796
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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. |
|---|---|---|---|---|---|---|---|
| 12 mins | 2025-12-25 07:59:42.641Z | 18.224° NNE | 2025-12-25 08:05:42.641Z | 68.513° E | 22.982° | 2025-12-25 08:11:42.641Z | 118.033° SE |
| 14 mins | 2025-12-25 09:54:42.641Z | 344.332° N | 2025-12-25 10:00:42.641Z | 276.506° WNW | 42.564° | 2025-12-25 10:08:42.641Z | 187.963° SSW |
| 11 mins | 2025-12-25 20:46:42.641Z | 126.428° SE | 2025-12-25 20:52:42.641Z | 76.015° E | 21.406° | 2025-12-25 20:57:42.641Z | 36.042° NE |
| 14 mins | 2025-12-25 22:39:42.641Z | 199.917° SSW | 2025-12-25 22:45:42.641Z | 265.539° W | 42.717° | 2025-12-25 22:53:42.641Z | 2.141° NNE |
| 4 mins | 2025-12-26 00:40:42.641Z | 288.772° WNW | 2025-12-26 00:42:42.641Z | 303.767° NW | 11.705° | 2025-12-26 00:44:42.641Z | 318.495° NNW |
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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