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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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, Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 9 hours ago
TLE from 9 hours ago
0 COSMOS 2091
1 20736U 90070B 26036.58297808 .00000015 00000-0 25389-4 0 9995
2 20736 82.5745 52.1868 0004503 59.7947 62.8769 12.62556482635704Epoch: 2026-02-05T13:59Z
TLE epoch observation values (Epoch: 2026-02-05T13:59:29.306Z)
Latitude
56.633°
Longitude
-124.77574°
Altitude
1,420.226 km
Speed
7.157 km/s
True Right ascension
14h 43m 19s
True Declination
56° 29' 18"
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
01:17:39
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,413.238 km
Perigee altitude
1,406.224 km
Semi-major axis
7,787.868 km
Eccentricity
0.00045
Inclination
82.5745°
RAAN
52.1868°
Arg. of periapsis
59.7947°
True anomaly
62.92284°
Mean anomaly
62.8769°
Eccentric anomaly
62.89987°
Mean motion
3.15802 °/min
Orbital period
114 mins
BSTAR
0.000025389
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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 | 2026-02-06 00:50:40.674Z | 155.588° SSE | 2026-02-06 00:57:40.674Z | 93.076° ESE | 35.191° | 2026-02-06 01:04:40.674Z | 22.597° NE |
| 13 mins | 2026-02-06 02:46:40.674Z | 226.692° WSW | 2026-02-06 02:52:40.674Z | 282.641° WNW | 31.103° | 2026-02-06 02:59:40.674Z | 349.458° N |
| 8 mins | 2026-02-06 10:54:40.674Z | 35.972° NE | 2026-02-06 10:57:40.674Z | 60.211° ENE | 16.697° | 2026-02-06 11:02:40.674Z | 99.156° ESE |
| 14 mins | 2026-02-06 12:47:40.674Z | 352.9° N | 2026-02-06 12:54:40.674Z | 167.259° S | 44.69° | 2026-02-06 13:01:40.674Z | 174.249° S |
| 7 mins | 2026-02-06 14:44:40.674Z | 308.221° NW | 2026-02-06 14:47:40.674Z | 284.567° WNW | 15.969° | 2026-02-06 14:51:40.674Z | 253.209° W |
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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