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: 13 hours ago
TLE from 13 hours ago
0 COSMOS 2091
1 20736U 90070B 26126.37733139 .00000027 00000-0 91669-4 0 9991
2 20736 82.5806 354.8664 0003044 190.0697 343.0200 12.62559013647034Epoch: 2026-05-06T09:03Z
TLE epoch observation values (Epoch: 2026-05-06T09:03:21.432Z)
Latitude
6.79286°
Longitude
173.90401°
Altitude
1,412.24 km
Speed
7.156 km/s
True Right ascension
11h 35m 55s
True Declination
6° 45' 21"
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
06:09:38
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,412.091 km
Perigee altitude
1,407.349 km
Semi-major axis
7,787.857 km
Eccentricity
0.0003
Inclination
82.5806°
RAAN
354.8664°
Arg. of periapsis
190.0697°
True anomaly
343.00981°
Mean anomaly
343.02°
Eccentric anomaly
343.01491°
Mean motion
3.15803 °/min
Orbital period
114 mins
BSTAR
0.000091669
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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. |
|---|---|---|---|---|---|---|---|
| 14 mins | 2026-05-07 01:52:00.673Z | 11.857° NNE | 2026-05-07 01:59:00.673Z | 74.232° E | 28.309° | 2026-05-07 02:06:00.673Z | 132.278° SE |
| 13 mins | 2026-05-07 03:48:00.673Z | 337.588° N | 2026-05-07 03:54:00.673Z | 270.389° WNW | 38.067° | 2026-05-07 04:01:00.673Z | 199.947° SSW |
| 13 mins | 2026-05-07 14:41:00.673Z | 138.668° SSE | 2026-05-07 14:47:00.673Z | 84.696° E | 28.088° | 2026-05-07 14:54:00.673Z | 26.428° NE |
| 14 mins | 2026-05-07 16:35:00.673Z | 212.386° SW | 2026-05-07 16:42:00.673Z | 292.431° WNW | 37.856° | 2026-05-07 16:49:00.673Z | 356.632° 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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