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: 6 hours ago
TLE from 6 hours ago
0 COSMOS 2090
1 20735U 90070A 26005.07750064 .00000026 00000-0 83225-4 0 9997
2 20735 82.5664 17.0318 0015391 76.8747 337.9072 12.65360447635304Epoch: 2026-01-05T01:51Z
TLE epoch observation values (Epoch: 2026-01-05T01:51:36.055Z)
Latitude
54.13282°
Longitude
-105.20374°
Altitude
1,398.647 km
Speed
7.171 km/s
True Right ascension
01h 49m 30s
True Declination
53° 58' 58"
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
08:06:50
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,410.182 km
Perigee altitude
1,386.245 km
Semi-major axis
7,776.351 km
Eccentricity
0.00154
Inclination
82.5664°
RAAN
17.0318°
Arg. of periapsis
76.8747°
True anomaly
337.84075°
Mean anomaly
337.9072°
Eccentric anomaly
337.87399°
Mean motion
3.16504 °/min
Orbital period
113.74 mins
BSTAR
0.000083225
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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. |
|---|---|---|---|---|---|---|---|
| 15 mins | 2026-01-05 11:39:34.280Z | 5.631° NNE | 2026-01-05 11:46:34.280Z | 66.015° ENE | 33.895° | 2026-01-05 11:54:34.280Z | 143.328° SSE |
| 13 mins | 2026-01-05 13:35:34.280Z | 332.667° NNW | 2026-01-05 13:41:34.280Z | 274.511° WNW | 32.043° | 2026-01-05 13:48:34.280Z | 210.619° SW |
| 13 mins | 2026-01-06 00:27:34.280Z | 147.041° SSE | 2026-01-06 00:33:34.280Z | 81.977° E | 33.381° | 2026-01-06 00:40:34.280Z | 21.907° NNE |
| 13 mins | 2026-01-06 02:21:34.280Z | 223.335° SW | 2026-01-06 02:27:34.280Z | 280.367° WNW | 32.549° | 2026-01-06 02:34:34.280Z | 350.425° 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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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