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, 0.8 m
Radar Cross Section
1.257 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 COSMOS 2091
1 20736U 90070B 26215.75334193 .00000023 00000-0 67377-4 0 9994
2 20736 82.5795 297.8030 0003558 23.2301 100.6355 12.62561031658317Epoch: 2026-08-03T18:04Z
TLE epoch observation values (Epoch: 2026-08-03T18:04:48.742Z)
Latitude
55.47849°
Longitude
-116.59234°
Altitude
1,422.056 km
Speed
7.155 km/s
True Right ascension
07h 07m 46s
True Declination
55° 19' 53"
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
12:41:19
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,412.483 km
Perigee altitude
1,406.941 km
Semi-major axis
7,787.849 km
Eccentricity
0.00036
Inclination
82.5795°
RAAN
297.803°
Arg. of periapsis
23.2301°
True anomaly
100.67557°
Mean anomaly
100.6355°
Eccentric anomaly
100.65553°
Mean motion
3.15803 °/min
Orbital period
113.99 mins
BSTAR
0.000067377
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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
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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. |
|---|---|---|---|---|---|---|---|
| 15 mins | 2026-08-05 05:38:45.112Z | 166.879° S | 2026-08-05 05:46:45.112Z | 78.098° E | 40.494° | 2026-08-05 05:53:45.112Z | 16.076° NNE |
| 11 mins | 2026-08-05 07:36:45.112Z | 243.899° WSW | 2026-08-05 07:41:45.112Z | 290.629° WNW | 25.419° | 2026-08-05 07:47:45.112Z | 343.072° N |
| 11 mins | 2026-08-05 15:41:45.112Z | 22.971° NE | 2026-08-05 15:46:45.112Z | 64.969° ENE | 21.706° | 2026-08-05 15:52:45.112Z | 114.305° SE |
| 15 mins | 2026-08-05 17:35:45.112Z | 346.83° N | 2026-08-05 17:42:45.112Z | 262.723° W | 43.466° | 2026-08-05 17:50:45.112Z | 185.032° SSW |
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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