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: 1 day ago
TLE from 1 day ago
0 COSMOS 2091
1 20736U 90070B 25257.44909043 .00000009 00000-0 -79222-5 0 9995
2 20736 82.5797 144.2236 0004215 26.3866 146.3911 12.62550929617519Epoch: 2025-09-14T10:46Z
TLE epoch observation values (Epoch: 2025-09-14T10:46:41.413Z)
Latitude
7.06717°
Longitude
167.96252°
Altitude
1,417.263 km
Speed
7.151 km/s
True Right ascension
21h 33m 12s
True Declination
7° 01' 44"
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
03:51:14
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,413.036 km
Perigee altitude
1,406.471 km
Semi-major axis
7,787.89 km
Eccentricity
0.00042
Inclination
82.5797°
RAAN
144.2236°
Arg. of periapsis
26.3866°
True anomaly
146.41782°
Mean anomaly
146.3911°
Eccentric anomaly
146.40446°
Mean motion
3.15801 °/min
Orbital period
114 mins
BSTAR
-0.0000079222
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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 | 2025-09-15 16:23:01.344Z | 156.426° SSE | 2025-09-15 16:30:01.344Z | 94.939° ESE | 35.495° | 2025-09-15 16:38:01.344Z | 19.754° NNE |
| 13 mins | 2025-09-15 18:19:01.344Z | 226.832° WSW | 2025-09-15 18:25:01.344Z | 281.353° WNW | 30.714° | 2025-09-15 18:32:01.344Z | 348.786° N |
| 8 mins | 2025-09-16 02:27:01.344Z | 35.056° NE | 2025-09-16 02:30:01.344Z | 59.254° ENE | 16.96° | 2025-09-16 02:35:01.344Z | 98.766° ESE |
| 14 mins | 2025-09-16 04:20:01.344Z | 352.505° N | 2025-09-16 04:27:01.344Z | 175.622° S | 44.815° | 2025-09-16 04:34:01.344Z | 174.905° S |
| 7 mins | 2025-09-16 06:17:01.344Z | 308.795° NW | 2025-09-16 06:20:01.344Z | 285.457° WNW | 15.689° | 2025-09-16 06:24:01.344Z | 254.2° 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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