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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

14 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 14 hours ago

0 COSMOS 2090
1 20735U 90070A   25128.61515259  .00000043  00000-0  17313-3 0  9990
2 20735  82.5669 172.2283 0012893 264.3096 211.9490 12.65350869605027

Epoch: 2025-05-08T14:45Z

Definitive object data (Epoch: 2025-05-08T14:45:49.183Z)

Latitude

62.94091°

Longitude

-110.63236°

Altitude

1,420.229 km

Speed

7.152 km/s

True Right ascension

22h 30m 01s

True Declination

62° 48' 48"

Sunlit

Object was in daylight at TLE epoch

Visualization TLE readout

Latitude

-52.0412°

Longitude

74.12857°

Altitude

1,413.918 km

Speed

7.156 km/s

Apparent Right ascension

05h 53m 19s

Apparent Declination

-73° 43' 24"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

13:11:54

Azimuth

201.336° SSW

Elevation

-43.489°

Doppler factor

Orbital elements

Apogee altitude

1,408.279 km

Perigee altitude

1,388.227 km

Semi-major axis

7,776.39 km

Eccentricity

0.0012893

Inclination

82.5669°

RAAN

172.2283°

Arg. of periapsis

264.3096°

True anomaly

211.87093°

Mean anomaly

211.949°

Eccentric anomaly

211.90995°

Mean motion

3.16502 °/min

BSTAR

0.00017313

Orbital period

113.74 mins

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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.
10 mins	2025-05-09 05:29:18.374Z	254.708° W	2025-05-09 05:34:18.374Z	293.589° NW	18.328°	2025-05-09 05:39:18.374Z	333.834° NNW
13 mins	2025-05-09 13:32:18.374Z	13.602° NNE	2025-05-09 13:38:18.374Z	67.278° ENE	28.788°	2025-05-09 13:45:18.374Z	130.959° SE
14 mins	2025-05-09 15:27:18.374Z	337.938° N	2025-05-09 15:33:18.374Z	276.301° WNW	37.518°	2025-05-09 15:41:18.374Z	198.968° SSW
12 mins	2025-05-10 02:19:18.374Z	137.494° SSE	2025-05-10 02:25:18.374Z	81.459° E	27.975°	2025-05-10 02:31:18.374Z	29.499° NE
14 mins	2025-05-10 04:13:18.374Z	213.916° SW	2025-05-10 04:19:18.374Z	281.183° WNW	38.05°	2025-05-10 04:27:18.374Z	358.035° N

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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