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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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Identifier
20735, 1990-070A
Orbit
LEO
Last TLE update
8 hours ago
Origin
Manufacturer
NPO PM
Mission
Defense Communications
Bus & Motor
STRELA-3, Unknown motor
Mass
225 kg wet, 225 kg dry
Launch date (UTC)
1990-08-08 (35 years ago)
Launch vehicle
TSIKLON-3
Launch site
Plesetsk Missile And Space Complex (PKMTR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Cyl, 1.6 m
Radar Cross Section
1.257 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 8 hours ago
0 COSMOS 2090
1 20735U 90070A   25188.93282844  .00000008  00000-0 -15843-4 0  9991
2 20735  82.5672 133.4716 0015137 124.3258 297.7042 12.65353034612390
Epoch: 2025-07-07T22:23Z
TLE epoch observation values (Epoch: 2025-07-07T22:23:16.377Z)
Latitude
61.07548°
Longitude
-114.89476°
Altitude
1,405.856 km
Speed
7.165 km/s
True Right ascension
09h 48m 14s
True Declination
60° 56' 31"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
-7.04676°
Longitude
52.21694°
Altitude
1,399.567 km
Speed
7.162 km/s
Apparent Right ascension
23h 22m 55s
Apparent Declination
-48° 03' 12"
Sunlit
Object is in full shadow
Visualization observer readout
Local Sidereal Time
18:43:35
Azimuth
138.862° SSE
Elevation
-17.488°
Doppler factor
1
Orbital elements
Apogee altitude
1,410.015 km
Perigee altitude
1,386.473 km
Semi-major axis
7,776.381 km
Eccentricity
0.00151
Inclination
82.5672°
RAAN
133.4716°
Arg. of periapsis
124.3258°
True anomaly
Unknown
Mean anomaly
297.7042°
Eccentric anomaly
Unknown
Mean motion
3.16502 °/min
Orbital period
113.74 mins
BSTAR
-0.000015843
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COSMOS 2090 Visibility forecast

Observer location: undefined°, undefined°

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.
16 mins2025-07-08 08:09:10.344Z353.504° N2025-07-08 08:17:10.344Z100.613° ESE44.864°2025-07-08 08:25:10.344Z172.012° S
8 mins2025-07-08 10:07:10.344Z310.011° NW2025-07-08 10:10:10.344Z285.904° WNW16.787°2025-07-08 10:15:10.344Z246.43° WSW
6 mins2025-07-08 19:07:10.344Z93.767° ESE2025-07-08 19:09:10.344Z78.134° E14.093°2025-07-08 19:13:10.344Z48.199° ENE
14 mins2025-07-08 20:56:10.344Z181.377° SSW2025-07-08 21:03:10.344Z44.763° NE44.58°2025-07-08 21:10:10.344Z9.279° NNE
9 mins2025-07-08 22:54:10.344Z260.037° W2025-07-08 22:58:10.344Z292.567° NW18.303°2025-07-08 23:03:10.344Z333.337° NNW
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