COSMOS 2090, 20735
Orbit data source: Space-Track
COSMOS 2090, 20735 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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20735 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: 14 hours ago
TLE from 14 hours ago
0 COSMOS 2090
1 20735U 90070A 25288.62740206 .00000054 00000-0 23263-3 0 9993
2 20735 82.5645 69.3815 0013399 259.8684 111.5000 12.65357245625009Epoch: 2025-10-15T15:03Z
TLE epoch observation values (Epoch: 2025-10-15T15:03:27.537Z)
Latitude
11.36954°
Longitude
-179.38567°
Altitude
1,406.726 km
Speed
7.156 km/s
True Right ascension
04h 43m 30s
True Declination
11° 18' 32"
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
23:47:43
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,408.647 km
Perigee altitude
1,387.808 km
Semi-major axis
7,776.364 km
Eccentricity
0.00134
Inclination
82.5645°
RAAN
69.3815°
Arg. of periapsis
259.8684°
True anomaly
111.64277°
Mean anomaly
111.5°
Eccentric anomaly
111.57139°
Mean motion
3.16503 °/min
Orbital period
113.74 mins
BSTAR
0.00023263
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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 2090 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-10-16 08:14:17.512Z | 101.989° ESE | 2025-10-16 08:18:17.512Z | 72.31° E | 13.38° | 2025-10-16 08:21:17.512Z | 50.421° ENE |
| 15 mins | 2025-10-16 10:04:17.512Z | 179.434° S | 2025-10-16 10:11:17.512Z | 77.653° E | 44.569° | 2025-10-16 10:19:17.512Z | 9.915° NNE |
| 10 mins | 2025-10-16 12:02:17.512Z | 257.446° W | 2025-10-16 12:07:17.512Z | 299.41° NW | 19.23° | 2025-10-16 12:12:17.512Z | 338.198° N |
| 12 mins | 2025-10-16 20:05:17.512Z | 17.652° NNE | 2025-10-16 20:11:17.512Z | 75.469° E | 27.652° | 2025-10-16 20:17:17.512Z | 127.585° SE |
| 14 mins | 2025-10-16 21:59:17.512Z | 340.157° N | 2025-10-16 22:06:17.512Z | 261.838° W | 38.522° | 2025-10-16 22:13:17.512Z | 197.86° SSW |
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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