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: 21 hours ago
TLE from 21 hours ago
0 COSMOS 2090
1 20735U 90070A 25257.57339145 .00000021 00000-0 54932-4 0 9991
2 20735 82.5610 89.3521 0013914 335.4211 126.8738 12.65355413621072Epoch: 2025-09-14T13:45Z
TLE epoch observation values (Epoch: 2025-09-14T13:45:41.021Z)
Latitude
75.60639°
Longitude
38.72573°
Altitude
1,420.318 km
Speed
7.154 km/s
True Right ascension
15h 55m 44s
True Declination
75° 31' 50"
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
03:51:13
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,409.055 km
Perigee altitude
1,387.415 km
Semi-major axis
7,776.372 km
Eccentricity
0.00139
Inclination
82.561°
RAAN
89.3521°
Arg. of periapsis
335.4211°
True anomaly
127.00121°
Mean anomaly
126.8738°
Eccentric anomaly
126.93752°
Mean motion
3.16503 °/min
Orbital period
113.74 mins
BSTAR
0.000054932
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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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2025-09-15 12:07:00.338Z | 127.673° SE | 2025-09-15 12:12:00.338Z | 86.399° E | 22.652° | 2025-09-15 12:18:00.338Z | 35.346° NE |
| 14 mins | 2025-09-15 14:00:00.338Z | 202.225° SSW | 2025-09-15 14:06:00.338Z | 264.835° W | 41.939° | 2025-09-15 14:14:00.338Z | 1.094° NNE |
| 14 mins | 2025-09-16 00:00:00.338Z | 5.931° NNE | 2025-09-16 00:07:00.338Z | 87.77° E | 37.886° | 2025-09-16 00:14:00.338Z | 150.366° SSE |
| 12 mins | 2025-09-16 01:55:00.338Z | 328.649° NNW | 2025-09-16 02:01:00.338Z | 273.419° WNW | 28° | 2025-09-16 02:07:00.338Z | 220.698° SW |
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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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