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
CYL + ANT, 1.1 m
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 17 hours ago
TLE from 17 hours ago
0 COSMOS 1691
1 16139U 85094B 26306.76685652 .00000007 00000-0 -22728-4 0 9991
2 16139 82.6148 201.8529 0000766 78.3929 337.4469 12.62478116892727Epoch: 2026-11-02T18:24Z
TLE epoch observation values (Epoch: 2026-11-02T18:24:16.403Z)
Latitude
55.23391°
Longitude
-105.54652°
Altitude
1,421.278 km
Speed
7.156 km/s
True Right ascension
14h 10m 14s
True Declination
55° 05' 11"
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
06:50:50
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,410.648 km
Perigee altitude
1,409.455 km
Semi-major axis
7,788.189 km
Eccentricity
0.00008
Inclination
82.6148°
RAAN
201.8529°
Arg. of periapsis
78.3929°
True anomaly
337.44353°
Mean anomaly
337.4469°
Eccentric anomaly
337.44522°
Mean motion
3.15783 °/min
Orbital period
114 mins
BSTAR
-0.000022728
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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. |
|---|---|---|---|---|---|---|---|
| 15 mins | 2026-11-03 17:01:25.777Z | 155.663° SSE | 2026-11-03 17:08:25.777Z | 92.073° ESE | 45.423° | 2026-11-03 17:16:25.777Z | 19.479° NNE |
| 13 mins | 2026-11-03 18:57:25.777Z | 227.223° WSW | 2026-11-03 19:03:25.777Z | 283.383° WNW | 36.918° | 2026-11-03 19:10:25.777Z | 349.382° N |
| 8 mins | 2026-11-04 03:05:25.777Z | 35.648° NE | 2026-11-04 03:08:25.777Z | 59.803° ENE | 17.602° | 2026-11-04 03:13:25.777Z | 98.927° ESE |
| 14 mins | 2026-11-04 04:58:25.777Z | 352.845° N | 2026-11-04 05:05:25.777Z | 169.127° S | 82.606° | 2026-11-04 05:12:25.777Z | 174.5° S |
| 8 mins | 2026-11-04 06:55:25.777Z | 308.593° NW | 2026-11-04 06:58:25.777Z | 285.093° WNW | 16.588° | 2026-11-04 07:03:25.777Z | 247.458° WSW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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