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: 20 hours ago
TLE from 20 hours ago
0 COSMOS 2090
1 20735U 90070A 25291.89324090 .00000027 00000-0 85894-4 0 9994
2 20735 82.5651 67.2820 0013494 251.9521 228.8089 12.65357381625413Epoch: 2025-10-18T21:26Z
TLE epoch observation values (Epoch: 2025-10-18T21:26:16.013Z)
Latitude
58.64126°
Longitude
-114.20522°
Altitude
1,417.696 km
Speed
7.154 km/s
True Right ascension
15h 39m 55s
True Declination
58° 30' 04"
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
12:39:21
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,408.72 km
Perigee altitude
1,387.733 km
Semi-major axis
7,776.363 km
Eccentricity
0.00135
Inclination
82.5651°
RAAN
67.282°
Arg. of periapsis
251.9521°
True anomaly
228.69267°
Mean anomaly
228.8089°
Eccentric anomaly
228.75077°
Mean motion
3.16503 °/min
Orbital period
113.74 mins
BSTAR
0.000085894
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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. |
|---|---|---|---|---|---|---|---|
| 14 mins | 2025-10-19 20:11:01.434Z | 6.175° NNE | 2025-10-19 20:18:01.434Z | 74.966° E | 35.741° | 2025-10-19 20:25:01.434Z | 144.438° SSE |
| 12 mins | 2025-10-19 22:07:01.434Z | 328.768° NNW | 2025-10-19 22:12:01.434Z | 281.524° WNW | 30.303° | 2025-10-19 22:19:01.434Z | 215.049° SW |
| 13 mins | 2025-10-20 08:58:01.434Z | 151.169° SSE | 2025-10-20 09:04:01.434Z | 87.749° E | 35.223° | 2025-10-20 09:11:01.434Z | 21.787° NNE |
| 13 mins | 2025-10-20 10:53:01.434Z | 229.066° WSW | 2025-10-20 10:59:01.434Z | 290.695° WNW | 31.252° | 2025-10-20 11:06:01.434Z | 351.643° 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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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