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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

Last TLE update

12 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)

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, 1.6 m

Radar Cross Section

1.257 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 12 hours ago

0 COSMOS 1691
1 16139U 85094B   25185.97218899  .00000028  00000-0  97693-4 0  9998
2 16139  82.6121 150.5513 0001079  83.1827 346.9756 12.62462710831427

Epoch: 2025-07-04T23:19Z

TLE epoch observation values (Epoch: 2025-07-04T23:19:57.128Z)

Latitude

68.94968°

Longitude

-103.06678°

Altitude

1,423.885 km

Speed

7.156 km/s

True Right ascension

11h 20m 33s

True Declination

68° 50' 38"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

70.21553°

Longitude

36.01981°

Altitude

1,424.162 km

Speed

7.155 km/s

Apparent Right ascension

12h 45m 12s

Apparent Declination

46° 40' 11"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

22:51:07

Azimuth

340.872° N

Elevation

0.248°

Doppler factor

Orbital elements

Apogee altitude

1,410.956 km

Perigee altitude

1,409.275 km

Semi-major axis

7,788.252 km

Eccentricity

0.00011

Inclination

82.6121°

RAAN

150.5513°

Arg. of periapsis

83.1827°

True anomaly

Unknown

Mean anomaly

346.9756°

Eccentric anomaly

Unknown

Mean motion

3.15779 °/min

Orbital period

114 mins

BSTAR

0.000097693

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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°

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	2025-07-05 11:00:49.007Z	326.605° NNW	2025-07-05 11:06:49.007Z	275.62° WNW	24.263°	2025-07-05 11:12:49.007Z	226.648° WSW
15 mins	2025-07-05 21:52:49.007Z	167.324° S	2025-07-05 21:59:49.007Z	91.487° ESE	41.35°	2025-07-05 22:07:49.007Z	14.54° NNE
12 mins	2025-07-05 23:49:49.007Z	242.245° WSW	2025-07-05 23:55:49.007Z	296.707° NW	24.558°	2025-07-06 00:01:49.007Z	345.173° N
11 mins	2025-07-06 07:55:49.007Z	25.575° NE	2025-07-06 08:00:49.007Z	70.097° E	22.349°	2025-07-06 08:06:49.007Z	117.85° SE
14 mins	2025-07-06 09:49:49.007Z	345.418° N	2025-07-06 09:55:49.007Z	285.852° WNW	42.832°	2025-07-06 10:03:49.007Z	186.989° SSW

Authenticating...

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Check out COSMOS 1691, 16139 on other resources

View COSMOS 1691, 16139 on NASA - NSSDCA Website

View COSMOS 1691, 16139 on Heavens-Above

View COSMOS 1691, 16139 on Keep Track

View COSMOS 1691, 16139 on Celestrak

View COSMOS 1691, 16139 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.