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COSMOS 2167, 21781

Orbit data source: Space-Track

COSMOS 2167, 21781 is a payload satellite owned by UNKS RF (CIS) in LEO that was launched on Tue, 12 Nov 1991 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/21781?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/21781?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21781, 1991-077C

Orbit

LEO

Last TLE update

17 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)

1991-11-12 (34 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 17 hours ago

0 COSMOS 2167
1 21781U 91077C   25192.80332634  .00000031  00000-0  11219-3 0  9992
2 21781  82.6050  97.9430 0007524 128.1046 295.0330 12.64278607552933

Epoch: 2025-07-11T19:16Z

TLE epoch observation values (Epoch: 2025-07-11T19:16:47.395Z)

Latitude

62.22175°

Longitude

-107.01229°

Altitude

1,413.49 km

Speed

7.161 km/s

True Right ascension

07h 28m 32s

True Declination

62° 05' 30"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

25.4835°

Longitude

-118.12458°

Altitude

1,409.376 km

Speed

7.157 km/s

Apparent Right ascension

08h 59m 44s

Apparent Declination

-4° 48' 13"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

00:32:40

Azimuth

68.247° E

Elevation

-30.746°

Doppler factor

Orbital elements

Apogee altitude

1,408.505 km

Perigee altitude

1,396.797 km

Semi-major axis

7,780.788 km

Eccentricity

0.00075

Inclination

82.605°

RAAN

97.943°

Arg. of periapsis

128.1046°

True anomaly

Unknown

Mean anomaly

295.033°

Eccentric anomaly

Unknown

Mean motion

3.16233 °/min

Orbital period

113.84 mins

BSTAR

0.00011219

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Other satellites on launch #77 in the year 1991 (1991-11-12 UTC)

COSMOS 2167 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.
15 mins	2025-07-12 17:49:33.857Z	164.856° S	2025-07-12 17:56:33.857Z	100.947° ESE	39.788°	2025-07-12 18:04:33.857Z	16.417° NNE
12 mins	2025-07-12 19:46:33.857Z	238.807° WSW	2025-07-12 19:52:33.857Z	294.951° NW	26.163°	2025-07-12 19:58:33.857Z	345.526° N
10 mins	2025-07-13 03:52:33.857Z	30.469° NE	2025-07-13 03:56:33.857Z	65.464° ENE	20.462°	2025-07-13 04:02:33.857Z	113.243° SE
14 mins	2025-07-13 05:45:33.857Z	347.962° N	2025-07-13 05:52:33.857Z	248.489° W	43.963°	2025-07-13 05:59:33.857Z	183.379° SSW

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Check out COSMOS 2167, 21781 on other resources

View COSMOS 2167, 21781 on NASA - NSSDCA Website

View COSMOS 2167, 21781 on Heavens-Above

View COSMOS 2167, 21781 on Keep Track

View COSMOS 2167, 21781 on Celestrak

View COSMOS 2167, 21781 on Gunter's Space Page

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