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, 0.8 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 26126.25278636 .00000038 00000-0 14215-3 0 9998
2 21783 82.6043 235.3319 0018668 69.2083 291.1008 12.66314295593488Epoch: 2026-05-06T06:04Z
TLE epoch observation values (Epoch: 2026-05-06T06:04:00.741Z)
Latitude
-0.00005°
Longitude
-79.78713°
Altitude
1,394.524 km
Speed
7.165 km/s
True Right ascension
15h 41m 19s
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
22:20:41
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,408.814 km
Perigee altitude
1,379.795 km
Semi-major axis
7,772.441 km
Eccentricity
0.00187
Inclination
82.6043°
RAAN
235.3319°
Arg. of periapsis
69.2083°
True anomaly
290.90106°
Mean anomaly
291.1008°
Eccentric anomaly
291.00095°
Mean motion
3.16743 °/min
Orbital period
113.66 mins
BSTAR
0.00014215
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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. |
|---|---|---|---|---|---|---|---|
| 13 mins | 2026-05-06 18:03:19.924Z | 11.921° NNE | 2026-05-06 18:09:19.924Z | 65.93° ENE | 30.168° | 2026-05-06 18:16:19.924Z | 133.302° SE |
| 13 mins | 2026-05-06 19:58:19.924Z | 336.347° NNW | 2026-05-06 20:04:19.924Z | 275.265° WNW | 35.855° | 2026-05-06 20:11:19.924Z | 204.354° SW |
| 12 mins | 2026-05-07 06:50:19.924Z | 138.261° SSE | 2026-05-07 06:55:19.924Z | 90.172° ESE | 29.293° | 2026-05-07 07:02:19.924Z | 26.576° NE |
| 14 mins | 2026-05-07 08:43:19.924Z | 214.809° SW | 2026-05-07 08:50:19.924Z | 290.629° WNW | 36.307° | 2026-05-07 08:57:19.924Z | 355.464° N |
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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