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: 17 hours ago
TLE from 17 hours ago
0 COSMOS 2090
1 20735U 90070A 25341.13260125 .00000040 00000-0 15795-3 0 9992
2 20735 82.5682 35.6397 0015151 139.0394 249.1130 12.65359187631642Epoch: 2025-12-07T03:10Z
TLE epoch observation values (Epoch: 2025-12-07T03:10:56.747Z)
Latitude
27.77287°
Longitude
-84.32756°
Altitude
1,408.393 km
Speed
7.157 km/s
True Right ascension
02h 38m 14s
True Declination
27° 38' 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
17:55:54
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,410.001 km
Perigee altitude
1,386.437 km
Semi-major axis
7,776.356 km
Eccentricity
0.00152
Inclination
82.5682°
RAAN
35.6397°
Arg. of periapsis
139.0394°
True anomaly
248.9509°
Mean anomaly
249.113°
Eccentric anomaly
249.03194°
Mean motion
3.16504 °/min
Orbital period
113.74 mins
BSTAR
0.00015795
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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 | 2025-12-08 03:47:02.935Z | 161.673° S | 2025-12-08 03:55:02.935Z | 85.812° E | 37.765° | 2025-12-08 04:02:02.935Z | 19.273° NNE |
| 13 mins | 2025-12-08 05:44:02.935Z | 233.674° WSW | 2025-12-08 05:50:02.935Z | 291.386° WNW | 28.51° | 2025-12-08 05:57:02.935Z | 350.22° N |
| 9 mins | 2025-12-08 13:50:02.935Z | 32.734° NE | 2025-12-08 13:54:02.935Z | 66.663° ENE | 18.234° | 2025-12-08 13:59:02.935Z | 105.791° ESE |
| 14 mins | 2025-12-08 15:43:02.935Z | 350.459° N | 2025-12-08 15:50:02.935Z | 211.908° SW | 44.507° | 2025-12-08 15:57:02.935Z | 178.385° S |
| 5 mins | 2025-12-08 17:41:02.935Z | 298.336° NW | 2025-12-08 17:43:02.935Z | 282.508° WNW | 13.933° | 2025-12-08 17:46:02.935Z | 259.613° W |
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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