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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
20736 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
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: 12 hours ago
TLE from 12 hours ago
0 COSMOS 2091
1 20736U 90070B 25353.22325635 .00000011 00000-0 48392-5 0 9993
2 20736 82.5781 83.0726 0004296 147.5541 240.1023 12.62555015629602Epoch: 2025-12-19T05:21Z
TLE epoch observation values (Epoch: 2025-12-19T05:21:29.348Z)
Latitude
27.39944°
Longitude
-81.51466°
Altitude
1,417.299 km
Speed
7.154 km/s
True Right ascension
05h 47m 42s
True Declination
27° 16' 16"
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
16:25:47
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,413.082 km
Perigee altitude
1,406.391 km
Semi-major axis
7,787.874 km
Eccentricity
0.00043
Inclination
82.5781°
RAAN
83.0726°
Arg. of periapsis
147.5541°
True anomaly
240.05963°
Mean anomaly
240.1023°
Eccentric anomaly
240.08097°
Mean motion
3.15802 °/min
Orbital period
114 mins
BSTAR
0.0000048392
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #70 in the year 1990 (1990-08-08 UTC)
Did you know?
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. |
|---|---|---|---|---|---|---|---|
| 14 mins | 2025-12-19 19:08:59.155Z | 334.788° NNW | 2025-12-19 19:15:59.155Z | 272.094° WNW | 30.844° | 2025-12-19 19:22:59.155Z | 212.139° SW |
| 13 mins | 2025-12-20 06:02:59.155Z | 151.021° SSE | 2025-12-20 06:08:59.155Z | 85.631° E | 35.411° | 2025-12-20 06:15:59.155Z | 21.296° NNE |
| 13 mins | 2025-12-20 07:57:59.155Z | 228.783° WSW | 2025-12-20 08:03:59.155Z | 288.541° WNW | 31.06° | 2025-12-20 08:10:59.155Z | 350.916° N |
| 9 mins | 2025-12-20 16:04:59.155Z | 31.608° NE | 2025-12-20 16:08:59.155Z | 63.561° ENE | 16.806° | 2025-12-20 16:13:59.155Z | 101.649° ESE |
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 |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
|---|