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 26063.28578262 .00000039 00000-0 15221-3 0 9996
2 20735 82.5721 339.6264 0013591 306.6748 171.7736 12.65362462642663Epoch: 2026-03-04T06:51Z
TLE epoch observation values (Epoch: 2026-03-04T06:51:31.618Z)
Latitude
60.74233°
Longitude
-118.69787°
Altitude
1,421.674 km
Speed
7.151 km/s
True Right ascension
09h 44m 56s
True Declination
60° 36' 29"
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
21:31:35
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,408.774 km
Perigee altitude
1,387.637 km
Semi-major axis
7,776.342 km
Eccentricity
0.00136
Inclination
82.5721°
RAAN
339.6264°
Arg. of periapsis
306.6748°
True anomaly
171.79585°
Mean anomaly
171.7736°
Eccentric anomaly
171.78473°
Mean motion
3.16505 °/min
Orbital period
113.74 mins
BSTAR
0.00015221
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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. |
|---|---|---|---|---|---|---|---|
| 12 mins | 2026-03-04 17:44:03.957Z | 133.125° SE | 2026-03-04 17:50:03.957Z | 81.623° E | 24.777° | 2026-03-04 17:56:03.957Z | 31.739° NE |
| 15 mins | 2026-03-04 19:37:03.957Z | 204.954° SW | 2026-03-04 19:44:03.957Z | 281.164° WNW | 40.677° | 2026-03-04 19:52:03.957Z | 0.325° NNE |
| 15 mins | 2026-03-05 05:37:03.957Z | 2.431° NNE | 2026-03-05 05:44:03.957Z | 74.052° E | 39.811° | 2026-03-05 05:52:03.957Z | 154.837° SSE |
| 12 mins | 2026-03-05 07:33:03.957Z | 324.869° NNW | 2026-03-05 07:38:03.957Z | 280.531° WNW | 25.934° | 2026-03-05 07:45:03.957Z | 221.679° SW |
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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