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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16139 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
NPO PM
Mission
Spacecraft
Bus & Motor
STRELA-3, Unknown motor
Mass
225 kg wet, 225 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 10 hours ago
TLE from 10 hours ago
0 COSMOS 1691
1 16139U 85094B 26127.04381288 .00000018 00000-0 41624-4 0 9998
2 16139 82.6101 316.0650 0000603 92.0527 25.3379 12.62474976870041Epoch: 2026-05-07T01:03Z
TLE epoch observation values (Epoch: 2026-05-07T01:03:05.432Z)
Latitude
61.78781°
Longitude
-118.52339°
Altitude
1,422.861 km
Speed
7.155 km/s
True Right ascension
08h 08m 34s
True Declination
61° 39' 24"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
18:44:00
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,410.534 km
Perigee altitude
1,409.595 km
Semi-major axis
7,788.202 km
Eccentricity
0.00006
Inclination
82.6101°
RAAN
316.065°
Arg. of periapsis
92.0527°
True anomaly
25.34086°
Mean anomaly
25.3379°
Eccentric anomaly
25.33938°
Mean motion
3.15782 °/min
Orbital period
114 mins
BSTAR
0.000041624
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Other satellites on launch #94 in the year 1985 (1985-10-09 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.COSMOS 1691 Visibility forecast
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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 | 2026-05-07 11:57:19.033Z | 133.649° SE | 2026-05-07 12:03:19.033Z | 83.872° E | 24.663° | 2026-05-07 12:09:19.033Z | 32.878° NE |
| 14 mins | 2026-05-07 13:51:19.033Z | 205.935° SW | 2026-05-07 13:57:19.033Z | 267.368° W | 40.628° | 2026-05-07 14:05:19.033Z | 359.446° N |
| 15 mins | 2026-05-07 23:52:19.033Z | 2.906° NNE | 2026-05-07 23:59:19.033Z | 80.124° E | 39.962° | 2026-05-08 00:07:19.033Z | 155.607° SSE |
| 12 mins | 2026-05-08 01:48:19.033Z | 324.93° NNW | 2026-05-08 01:53:19.033Z | 280.951° WNW | 25.704° | 2026-05-08 02:00:19.033Z | 222.193° SW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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