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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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: 11 hours ago
TLE from 11 hours ago
0 COSMOS 2090
1 20735U 90070A 26126.44134359 .00000024 00000-0 73794-4 0 9993
2 20735 82.5637 299.0307 0014729 155.9321 231.8037 12.65365356650657Epoch: 2026-05-06T10:35Z
TLE epoch observation values (Epoch: 2026-05-06T10:35:32.086Z)
Latitude
27.38813°
Longitude
-80.29657°
Altitude
1,411.188 km
Speed
7.154 km/s
True Right ascension
20h 11m 33s
True Declination
27° 15' 35"
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
05:15:17
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,409.648 km
Perigee altitude
1,386.74 km
Semi-major axis
7,776.331 km
Eccentricity
0.00147
Inclination
82.5637°
RAAN
299.0307°
Arg. of periapsis
155.9321°
True anomaly
231.67121°
Mean anomaly
231.8037°
Eccentric anomaly
231.73744°
Mean motion
3.16505 °/min
Orbital period
113.74 mins
BSTAR
0.000073794
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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 | 2026-05-06 22:25:48.235Z | 5.646° NNE | 2026-05-06 22:33:48.235Z | 80.51° E | 33.142° | 2026-05-06 22:40:48.235Z | 141.58° SSE |
| 13 mins | 2026-05-07 00:21:48.235Z | 334.032° NNW | 2026-05-07 00:27:48.235Z | 277.16° WNW | 32.759° | 2026-05-07 00:34:48.235Z | 209.832° SW |
| 13 mins | 2026-05-07 11:13:48.235Z | 145.996° SSE | 2026-05-07 11:19:48.235Z | 83.969° E | 32.739° | 2026-05-07 11:26:48.235Z | 22.923° NE |
| 14 mins | 2026-05-07 13:07:48.235Z | 221.596° SW | 2026-05-07 13:13:48.235Z | 278.287° WNW | 33.444° | 2026-05-07 13:21:48.235Z | 354.18° 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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