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COSMOS 2091, 20736

Orbit data source: Space-Track

COSMOS 2091, 20736 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/20736?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/20736?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

20736, 1990-070B

Orbit

LEO

Last TLE update

13 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 13 hours ago

0 COSMOS 2091
1 20736U 90070B   25183.96557976  .00000019  00000-0  44330-4 0  9995
2 20736  82.5765 191.1101 0003737 159.4198 264.1539 12.62548927608240

Epoch: 2025-07-02T23:10Z

TLE epoch observation values (Epoch: 2025-07-02T23:10:26.091Z)

Latitude

62.66701°

Longitude

-63.21045°

Altitude

1,423.46 km

Speed

7.155 km/s

True Right ascension

13h 42m 32s

True Declination

62° 32' 19"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-69.77053°

Longitude

-98.67208°

Altitude

1,440.421 km

Speed

7.14 km/s

Apparent Right ascension

11h 28m 41s

Apparent Declination

-56° 15' 10"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

23:33:06

Azimuth

177.82° S

Elevation

-73.647°

Doppler factor

Orbital elements

Apogee altitude

1,412.672 km

Perigee altitude

1,406.851 km

Semi-major axis

7,787.899 km

Eccentricity

0.00037

Inclination

82.5765°

RAAN

191.1101°

Arg. of periapsis

159.4198°

True anomaly

Unknown

Mean anomaly

264.1539°

Eccentric anomaly

Unknown

Mean motion

3.158 °/min

Orbital period

114 mins

BSTAR

0.00004433

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

COSMOS 2091 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	2025-07-03 12:45:33.413Z	346.813° N	2025-07-03 12:53:33.413Z	262.8° W	42.736°	2025-07-03 13:01:33.413Z	187.194° SSW
11 mins	2025-07-03 23:41:33.413Z	124.475° SE	2025-07-03 23:46:33.413Z	82.319° E	22.229°	2025-07-03 23:52:33.413Z	33.992° NE
14 mins	2025-07-04 01:34:33.413Z	201.09° SSW	2025-07-04 01:40:33.413Z	268.369° W	42.541°	2025-07-04 01:48:33.413Z	1.796° NNE
11 mins	2025-07-04 11:35:33.413Z	5.647° NNE	2025-07-04 11:42:33.413Z	83.713° E	37.713°	2025-07-04 11:46:33.413Z	137.094° SSE

Authenticating...

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Check out COSMOS 2091, 20736 on other resources

View COSMOS 2091, 20736 on NASA - NSSDCA Website

View COSMOS 2091, 20736 on Heavens-Above

View COSMOS 2091, 20736 on Keep Track

View COSMOS 2091, 20736 on Celestrak

View COSMOS 2091, 20736 on Gunter's Space Page

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