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 25310.47994508 .00000045 00000-0 17926-3 0 9999
2 21783 82.6058 351.1701 0018994 118.3154 241.9859 12.66307608570609Epoch: 2025-11-06T11:31Z
TLE epoch observation values (Epoch: 2025-11-06T11:31:07.254Z)
Latitude
0.00002°
Longitude
132.45221°
Altitude
1,406.713 km
Speed
7.154 km/s
True Right ascension
23h 24m 40s
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
01:50:57
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,409.095 km
Perigee altitude
1,379.569 km
Semi-major axis
7,772.469 km
Eccentricity
0.0019
Inclination
82.6058°
RAAN
351.1701°
Arg. of periapsis
118.3154°
True anomaly
241.79396°
Mean anomaly
241.9859°
Eccentric anomaly
241.88991°
Mean motion
3.16741 °/min
Orbital period
113.66 mins
BSTAR
0.00017926
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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 | 2025-11-07 12:47:40.738Z | 28.145° NE | 2025-11-07 12:51:40.738Z | 59.112° ENE | 16.298° | 2025-11-07 12:56:40.738Z | 98.587° ESE |
| 14 mins | 2025-11-07 14:41:40.738Z | 353.076° N | 2025-11-07 14:47:40.738Z | 7.506° NNE | 44.884° | 2025-11-07 14:55:40.738Z | 174.158° S |
| 7 mins | 2025-11-07 16:38:40.738Z | 304.361° NW | 2025-11-07 16:41:40.738Z | 279.735° WNW | 15.744° | 2025-11-07 16:45:40.738Z | 249.243° W |
| 7 mins | 2025-11-08 01:36:40.738Z | 100.984° ESE | 2025-11-08 01:39:40.738Z | 77.408° E | 14.965° | 2025-11-08 01:43:40.738Z | 47.006° ENE |
| 14 mins | 2025-11-08 03:26:40.738Z | 183.69° SSW | 2025-11-08 03:32:40.738Z | 165.275° S | 44.778° | 2025-11-08 03:40:40.738Z | 8.253° NNE |
| 9 mins | 2025-11-08 05:24:40.738Z | 262.706° W | 2025-11-08 05:28:40.738Z | 295.027° NW | 17.352° | 2025-11-08 05:33:40.738Z | 334.44° 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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