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COSMOS 2165, 21779

Orbit data source: Space-Track

COSMOS 2165, 21779 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/21779?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/21779?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21779, 1991-077A

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)

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 8 hours ago

0 COSMOS 2165
1 21779U 91077A   25193.23347270  .00000045  00000-0  18318-3 0  9991
2 21779  82.6057  89.3764 0011449 105.5447  10.8306 12.64909606554294

Epoch: 2025-07-12T05:36Z

TLE epoch observation values (Epoch: 2025-07-12T05:36:12.041Z)

Latitude

62.74062°

Longitude

-119.56249°

Altitude

1,404.732 km

Speed

7.168 km/s

True Right ascension

16h 59m 26s

True Declination

62° 36' 43"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

69.97433°

Longitude

-125.99927°

Altitude

1,405.936 km

Speed

7.168 km/s

Apparent Right ascension

14h 34m 32s

Apparent Declination

24° 35' 50"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

01:31:38

Azimuth

344.371° N

Elevation

-23.841°

Doppler factor

Orbital elements

Apogee altitude

1,408.967 km

Perigee altitude

1,391.156 km

Semi-major axis

7,778.198 km

Eccentricity

0.00114

Inclination

82.6057°

RAAN

89.3764°

Arg. of periapsis

105.5447°

True anomaly

Unknown

Mean anomaly

10.8306°

Eccentric anomaly

Unknown

Mean motion

3.16391 °/min

Orbital period

113.78 mins

BSTAR

0.00018318

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

COSMOS 2165 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.
12 mins	2025-07-12 16:29:22.695Z	134.755° SE	2025-07-12 16:35:22.695Z	85.512° E	24.733°	2025-07-12 16:41:22.695Z	33.303° NE
14 mins	2025-07-12 18:23:22.695Z	206.518° SW	2025-07-12 18:29:22.695Z	269.9° W	40.48°	2025-07-12 18:37:22.695Z	359.522° N
14 mins	2025-07-13 04:23:22.695Z	3.814° NNE	2025-07-13 04:30:22.695Z	88.224° E	39.588°	2025-07-13 04:37:22.695Z	153.856° SSE
11 mins	2025-07-13 06:19:22.695Z	322.236° NNW	2025-07-13 06:24:22.695Z	274.72° WNW	25.789°	2025-07-13 06:30:22.695Z	223.875° SW

Authenticating...

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Check out COSMOS 2165, 21779 on other resources

View COSMOS 2165, 21779 on NASA - NSSDCA Website

View COSMOS 2165, 21779 on Heavens-Above

View COSMOS 2165, 21779 on Keep Track

View COSMOS 2165, 21779 on Celestrak

View COSMOS 2165, 21779 on Gunter's Space Page

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