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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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, 0.9 m
Radar Cross Section
1.257 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 17 hours ago
TLE from 17 hours ago
0 COSMOS 2169
1 21783U 91077E 26305.91871375 .00000042 00000-0 16782-3 0 9995
2 21783 82.5993 120.2658 0018042 18.8869 341.2890 12.66319471616222Epoch: 2026-11-01T22:02Z
TLE epoch observation values (Epoch: 2026-11-01T22:02:56.868Z)
Latitude
-0.00004°
Longitude
108.32566°
Altitude
1,386.419 km
Speed
7.172 km/s
True Right ascension
08h 01m 03s
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
11:15:52
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,408.306 km
Perigee altitude
1,380.26 km
Semi-major axis
7,772.42 km
Eccentricity
0.0018
Inclination
82.5993°
RAAN
120.2658°
Arg. of periapsis
18.8869°
True anomaly
341.22253°
Mean anomaly
341.289°
Eccentric anomaly
341.25578°
Mean motion
3.16744 °/min
Orbital period
113.66 mins
BSTAR
0.00016782
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-11-02 21:26:40.028Z | 37.706° NE | 2026-11-02 21:29:40.028Z | 59.82° ENE | 12.85° | 2026-11-02 21:32:40.028Z | 81.836° E |
| 15 mins | 2026-11-02 23:18:40.028Z | 357.982° N | 2026-11-02 23:25:40.028Z | 69.759° E | 70.308° | 2026-11-02 23:33:40.028Z | 163.841° S |
| 11 mins | 2026-11-03 01:14:40.028Z | 320.712° NNW | 2026-11-03 01:19:40.028Z | 279.233° WNW | 22.698° | 2026-11-03 01:25:40.028Z | 232.296° WSW |
| 14 mins | 2026-11-03 12:04:40.028Z | 171.472° S | 2026-11-03 12:10:40.028Z | 105.129° ESE | 68.672° | 2026-11-03 12:18:40.028Z | 12.819° NNE |
| 11 mins | 2026-11-03 14:01:40.028Z | 251.618° W | 2026-11-03 14:06:40.028Z | 296.872° NW | 23.841° | 2026-11-03 14:12:40.028Z | 344.038° 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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