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COSMOS 1691, 16139

Orbit data source: Space-Track

COSMOS 1691, 16139 is a payload satellite owned by GUKOS (CIS) in LEO that was launched on Wed, 09 Oct 1985 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/16139?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/16139?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

16139, 1985-094B

Orbit

LEO

Country

CIS

Related business

Russian Space Forces (RU)

Manufacturer

NPO PM

Mission

Defense Communications

Bus & Motor

STRELA-3, Unknown motor

Mass

225 kg wet, 225 kg dry

Launch date (UTC)

1985-10-09 (40 years ago)

Launch vehicle

TSIKLON-3

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 0.8 m

Radar Cross Section

1.257 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 8 hours ago

TLE from 8 hours ago

0 COSMOS 1691
1 16139U 85094B   25242.93960381  .00000015  00000-0  23519-4 0  9990
2 16139  82.6100 114.3661 0001210  82.0761 288.2428 12.62464136838614

Epoch: 2025-08-30T22:33Z

TLE epoch observation values (Epoch: 2025-08-30T22:33:01.769Z)

Latitude

10.16897°

Longitude

158.0685°

Altitude

1,414.487 km

Speed

7.154 km/s

True Right ascension

07h 42m 46s

True Declination

10° 06' 52"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

22:11:12

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,411.052 km

Perigee altitude

1,409.167 km

Semi-major axis

7,788.246 km

Eccentricity

0.00012

Inclination

82.61°

RAAN

114.3661°

Arg. of periapsis

82.0761°

True anomaly

288.22963°

Mean anomaly

288.2428°

Eccentric anomaly

288.23622°

Mean motion

3.15779 °/min

Orbital period

114 mins

BSTAR

0.000023519

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Other satellites on launch #94 in the year 1985 (1985-10-09 UTC)

COSMOS 1690, 16138

COSMOS 1691 DEB, 43316

COSMOS 1691 DEB, 43317

COSMOS 1691 DEB, 43318

COSMOS 1691 DEB, 16264 (Decayed)

COSMOS 1691 DEB, 16265 (Decayed)

COSMOS 1691 DEB, 16266

COSMOS 1691 DEB, 16267

COSMOS 1691 DEB, 16268

COSMOS 1691 Visibility forecast

Observer location: undefined°, undefined°
Set Observer location

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	2025-08-31 15:41:54.374Z	166.993° S	2025-08-31 15:49:54.374Z	78.993° E	40.581°	2025-08-31 15:56:54.374Z	16.053° NNE
11 mins	2025-08-31 17:39:54.374Z	243.715° WSW	2025-08-31 17:44:54.374Z	290.126° WNW	25.384°	2025-08-31 17:50:54.374Z	342.763° N
11 mins	2025-09-01 01:44:54.374Z	22.491° NNE	2025-09-01 01:49:54.374Z	64.138° ENE	21.673°	2025-09-01 01:55:54.374Z	113.897° SE
15 mins	2025-09-01 03:38:54.374Z	346.962° N	2025-09-01 03:45:54.374Z	267.372° W	43.466°	2025-09-01 03:53:54.374Z	185.165° SSW