COSMOS 2091, 20736
Orbit data source: Space-Track
COSMOS 2091, 20736 is a payload satellite owned by UNKS (CIS) in LEO that was launched on Wed, 08 Aug 1990 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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20736 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: 14 hours ago
TLE from 14 hours ago
0 COSMOS 2091
1 20736U 90070B 26315.28284911 .00000030 00000-0 10701-3 0 9991
2 20736 82.5791 234.2409 0004135 123.1717 358.8687 12.62562760670871Epoch: 2026-11-11T06:47Z
TLE epoch observation values (Epoch: 2026-11-11T06:47:18.163Z)
Latitude
57.29238°
Longitude
-109.66122°
Altitude
1,418.726 km
Speed
7.158 km/s
True Right ascension
02h 50m 23s
True Declination
57° 08' 57"
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
16:46:54
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,412.925 km
Perigee altitude
1,406.484 km
Semi-major axis
7,787.842 km
Eccentricity
0.00041
Inclination
82.5791°
RAAN
234.2409°
Arg. of periapsis
123.1717°
True anomaly
358.86776°
Mean anomaly
358.8687°
Eccentric anomaly
358.86823°
Mean motion
3.15804 °/min
Orbital period
113.99 mins
BSTAR
0.00010701
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Other satellites on launch #70 in the year 1990 (1990-08-08 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 2091 Visibility forecast
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2026-11-11 21:31:24.593Z | 259.685° W | 2026-11-11 21:36:24.593Z | 297.261° NW | 16.961° | 2026-11-11 21:41:24.593Z | 334.9° NNW |
| 13 mins | 2026-11-12 05:35:24.593Z | 13.024° NNE | 2026-11-12 05:41:24.593Z | 72.322° E | 38.361° | 2026-11-12 05:48:24.593Z | 137.049° SSE |
| 13 mins | 2026-11-12 07:30:24.593Z | 334.468° NNW | 2026-11-12 07:36:24.593Z | 273.155° WNW | 43.712° | 2026-11-12 07:43:24.593Z | 206.526° SW |
| 13 mins | 2026-11-12 18:23:24.593Z | 144.738° SSE | 2026-11-12 18:29:24.593Z | 86.318° E | 38.225° | 2026-11-12 18:36:24.593Z | 24.25° NE |
| 6 mins | 2026-11-12 20:17:24.593Z | 218.372° SW | 2026-11-12 20:23:24.593Z | 270.96° WNW | 42.742° | 2026-11-12 20:23:24.593Z | 270.96° WNW |
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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