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: 6 hours ago
TLE from 6 hours ago
0 COSMOS 2090
1 20735U 90070A 26003.51111314 .00000042 00000-0 16934-3 0 9993
2 20735 82.5663 18.0388 0015404 80.2560 42.7323 12.65360367635107Epoch: 2026-01-03T12:16Z
TLE epoch observation values (Epoch: 2026-01-03T12:16:00.175Z)
Latitude
56.25194°
Longitude
-100.30277°
Altitude
1,401.432 km
Speed
7.169 km/s
True Right ascension
12h 27m 20s
True Declination
56° 06' 22"
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
18:09:53
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,410.193 km
Perigee altitude
1,386.235 km
Semi-major axis
7,776.351 km
Eccentricity
0.00154
Inclination
82.5663°
RAAN
18.0388°
Arg. of periapsis
80.256°
True anomaly
42.85225°
Mean anomaly
42.7323°
Eccentric anomaly
42.79226°
Mean motion
3.16504 °/min
Orbital period
113.74 mins
BSTAR
0.00016934
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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 | 2026-01-04 00:58:50.331Z | 165.718° S | 2026-01-04 01:06:50.331Z | 88.944° E | 39.706° | 2026-01-04 01:13:50.331Z | 17.679° NNE |
| 11 mins | 2026-01-04 02:56:50.331Z | 241.593° WSW | 2026-01-04 03:01:50.331Z | 289.415° WNW | 26.292° | 2026-01-04 03:07:50.331Z | 343.53° N |
| 9 mins | 2026-01-04 11:01:50.331Z | 30.636° NE | 2026-01-04 11:05:50.331Z | 65.549° ENE | 20.162° | 2026-01-04 11:10:50.331Z | 107.258° ESE |
| 14 mins | 2026-01-04 12:54:50.331Z | 348.144° N | 2026-01-04 13:01:50.331Z | 240.572° WSW | 43.996° | 2026-01-04 13:08:50.331Z | 182.65° SSW |
| 4 mins | 2026-01-04 14:52:50.331Z | 298.572° NW | 2026-01-04 14:54:50.331Z | 283.52° WNW | 12.252° | 2026-01-04 14:56:50.331Z | 268.607° W |
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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