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: 12 hours ago
TLE from 12 hours ago
0 COSMOS 2090
1 20735U 90070A 25311.25338563 .00000034 00000-0 12523-3 0 9993
2 20735 82.5683 54.8395 0014079 205.7756 221.9131 12.65358009627865Epoch: 2025-11-07T06:04Z
TLE epoch observation values (Epoch: 2025-11-07T06:04:52.518Z)
Latitude
66.51979°
Longitude
-65.69419°
Altitude
1,420.54 km
Speed
7.153 km/s
True Right ascension
04h 48m 53s
True Declination
66° 24' 16"
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
14:34:26
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,409.172 km
Perigee altitude
1,387.275 km
Semi-major axis
7,776.361 km
Eccentricity
0.00141
Inclination
82.5683°
RAAN
54.8395°
Arg. of periapsis
205.7756°
True anomaly
221.80547°
Mean anomaly
221.9131°
Eccentric anomaly
221.85927°
Mean motion
3.16504 °/min
Orbital period
113.74 mins
BSTAR
0.00012523
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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 | 2025-11-07 19:37:04.732Z | 342.359° N | 2025-11-07 19:45:04.732Z | 264.432° W | 38.077° | 2025-11-07 19:52:04.732Z | 198.887° SSW |
| 12 mins | 2025-11-08 06:31:04.732Z | 133.952° SE | 2025-11-08 06:36:04.732Z | 87.982° E | 27.321° | 2025-11-08 06:43:04.732Z | 27.929° NE |
| 14 mins | 2025-11-08 08:24:04.732Z | 210.968° SW | 2025-11-08 08:31:04.732Z | 292.796° NW | 38.491° | 2025-11-08 08:38:04.732Z | 357.224° 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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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