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COSMOS 2169, 21783

Orbit data source: Space-Track

COSMOS 2169, 21783 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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https://www.satcat.com/sats-embedded/21783?theme=dark&initialShowStats=false

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Identifier

21783, 1991-077E

Orbit

LEO

Last TLE update

16 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, Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 16 hours ago

0 COSMOS 2169
1 21783U 91077E   25192.91383286  .00000035  00000-0  12985-3 0  9990
2 21783  82.6020  66.4890 0018586  30.5825 329.6348 12.66303665555722

Epoch: 2025-07-11T21:55Z

TLE epoch observation values (Epoch: 2025-07-11T21:55:55.159Z)

Latitude

-0°

Longitude

167.45024°

Altitude

1,387.306 km

Speed

7.172 km/s

True Right ascension

04h 25m 57s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

51.74165°

Longitude

-22.40245°

Altitude

1,407.472 km

Speed

7.16 km/s

Apparent Right ascension

14h 57m 16s

Apparent Declination

11° 59' 31"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

02:08:42

Azimuth

345.097° N

Elevation

-36.88°

Doppler factor

Orbital elements

Apogee altitude

1,408.794 km

Perigee altitude

1,379.902 km

Semi-major axis

7,772.485 km

Eccentricity

0.00186

Inclination

82.602°

RAAN

66.489°

Arg. of periapsis

30.5825°

True anomaly

Unknown

Mean anomaly

329.6348°

Eccentric anomaly

Unknown

Mean motion

3.1674 °/min

Orbital period

113.66 mins

BSTAR

0.00012985

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

COSMOS 2169 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.
13 mins	2025-07-12 15:06:20.680Z	139.102° SSE	2025-07-12 15:12:20.680Z	86.617° E	27.367°	2025-07-12 15:19:20.680Z	27.029° NE
14 mins	2025-07-12 17:00:20.680Z	212.066° SW	2025-07-12 17:06:20.680Z	273.871° WNW	38.041°	2025-07-12 17:14:20.680Z	357.592° N
15 mins	2025-07-13 02:59:20.680Z	0.666° NNE	2025-07-13 03:06:20.680Z	81.032° E	41.768°	2025-07-13 03:14:20.680Z	159.767° S
11 mins	2025-07-13 04:55:20.680Z	321.136° NNW	2025-07-13 05:00:20.680Z	276.721° WNW	23.381°	2025-07-13 05:06:20.680Z	228.076° WSW

Authenticating...

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Check out COSMOS 2169, 21783 on other resources

View COSMOS 2169, 21783 on NASA - NSSDCA Website

View COSMOS 2169, 21783 on Heavens-Above

View COSMOS 2169, 21783 on Keep Track

View COSMOS 2169, 21783 on Celestrak

View COSMOS 2169, 21783 on Gunter's Space Page

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