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, 0.9 m
Radar Cross Section
1.257 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 COSMOS 2090
1 20735U 90070A 26315.57153100 .00000036 00000-0 13556-3 0 9994
2 20735 82.5673 177.4793 0015144 87.5207 298.4493 12.65369803674573Epoch: 2026-11-11T13:43Z
TLE epoch observation values (Epoch: 2026-11-11T13:43:00.278Z)
Latitude
25.61363°
Longitude
-75.42129°
Altitude
1,398.224 km
Speed
7.166 km/s
True Right ascension
12h 04m 11s
True Declination
25° 29' 27"
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
16:46:53
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,409.952 km
Perigee altitude
1,386.399 km
Semi-major axis
7,776.312 km
Eccentricity
0.00151
Inclination
82.5673°
RAAN
177.4793°
Arg. of periapsis
87.5207°
True anomaly
298.29658°
Mean anomaly
298.4493°
Eccentric anomaly
298.37295°
Mean motion
3.16506 °/min
Orbital period
113.74 mins
BSTAR
0.00013556
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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. |
|---|---|---|---|---|---|---|---|
| 13 mins | 2026-11-12 01:34:24.092Z | 12.94° NNE | 2026-11-12 01:41:24.092Z | 75.255° E | 30.663° | 2026-11-12 01:47:24.092Z | 126.811° SE |
| 14 mins | 2026-11-12 03:29:24.092Z | 340.744° N | 2026-11-12 03:36:24.092Z | 261.616° W | 53.98° | 2026-11-12 03:43:24.092Z | 196.909° SSW |
| 12 mins | 2026-11-12 14:22:24.092Z | 132.515° SE | 2026-11-12 14:27:24.092Z | 87.429° E | 29.425° | 2026-11-12 14:34:24.092Z | 28.356° NE |
| 14 mins | 2026-11-12 16:15:24.092Z | 209.18° SW | 2026-11-12 16:22:24.092Z | 294.581° NW | 54.567° | 2026-11-12 16:29:24.092Z | 358.143° N |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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