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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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<iframe src="https://www.satcat.com/sats-embedded/20735?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

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https://www.satcat.com/sats-embedded/20735?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

20735, 1990-070A

Orbit

LEO

Last TLE update

8 hours ago

Origin

Russian Space Forces (CIS)

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

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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Other satellites on launch #70 in the year 1990 (1990-08-08 UTC)

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 mins	2025-07-08 08:09:10.344Z	353.504° N	2025-07-08 08:17:10.344Z	100.613° ESE	44.864°	2025-07-08 08:25:10.344Z	172.012° S
8 mins	2025-07-08 10:07:10.344Z	310.011° NW	2025-07-08 10:10:10.344Z	285.904° WNW	16.787°	2025-07-08 10:15:10.344Z	246.43° WSW
6 mins	2025-07-08 19:07:10.344Z	93.767° ESE	2025-07-08 19:09:10.344Z	78.134° E	14.093°	2025-07-08 19:13:10.344Z	48.199° ENE
14 mins	2025-07-08 20:56:10.344Z	181.377° SSW	2025-07-08 21:03:10.344Z	44.763° NE	44.58°	2025-07-08 21:10:10.344Z	9.279° NNE
9 mins	2025-07-08 22:54:10.344Z	260.037° W	2025-07-08 22:58:10.344Z	292.567° NW	18.303°	2025-07-08 23:03:10.344Z	333.337° NNW

Authenticating...

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Check out COSMOS 2090, 20735 on other resources

View COSMOS 2090, 20735 on NASA - NSSDCA Website

View COSMOS 2090, 20735 on Heavens-Above

View COSMOS 2090, 20735 on Keep Track

View COSMOS 2090, 20735 on Celestrak

View COSMOS 2090, 20735 on Gunter's Space Page

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