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, 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 26235.28493594 .00000013 00000-0 10939-4 0 9997
2 21783 82.6072 165.5055 0017498 173.5543 186.5779 12.66316857607283Epoch: 2026-08-23T06:50Z
TLE epoch observation values (Epoch: 2026-08-23T06:50:18.465Z)
Latitude
0.00001°
Longitude
91.34537°
Altitude
1,413.234 km
Speed
7.148 km/s
True Right ascension
11h 02m 01s
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
14:58:45
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,407.894 km
Perigee altitude
1,380.693 km
Semi-major axis
7,772.431 km
Eccentricity
0.00175
Inclination
82.6072°
RAAN
165.5055°
Arg. of periapsis
173.5543°
True anomaly
186.55498°
Mean anomaly
186.5779°
Eccentric anomaly
186.56644°
Mean motion
3.16744 °/min
Orbital period
113.66 mins
BSTAR
0.000010939
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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. |
|---|---|---|---|---|---|---|---|
| 14 mins | 2026-08-24 06:12:06.732Z | 10.251° NNE | 2026-08-24 06:19:06.732Z | 75.958° E | 30.619° | 2026-08-24 06:26:06.732Z | 136.748° SSE |
| 14 mins | 2026-08-24 08:07:06.732Z | 337.036° NNW | 2026-08-24 08:13:06.732Z | 281.09° WNW | 35.204° | 2026-08-24 08:21:06.732Z | 203.007° SW |
| 12 mins | 2026-08-24 18:59:06.732Z | 139.899° SSE | 2026-08-24 19:05:06.732Z | 79.333° E | 29.904° | 2026-08-24 19:11:06.732Z | 27.307° NE |
| 13 mins | 2026-08-24 20:53:06.732Z | 218.512° SW | 2026-08-24 20:59:06.732Z | 285.775° WNW | 36.185° | 2026-08-24 21:06:06.732Z | 354.289° 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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