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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Edit Public Description
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: 12 hours ago
TLE from 12 hours ago
0 COSMOS 1691
1 16139U 85094B 25297.88406056 .00000019 00000-0 44680-4 0 9994
2 16139 82.6091 79.4351 0000842 80.2833 41.2318 12.62467541845548Epoch: 2025-10-24T21:13Z
TLE epoch observation values (Epoch: 2025-10-24T21:13:02.832Z)
Latitude
57.80098°
Longitude
-104.17738°
Altitude
1,421.96 km
Speed
7.155 km/s
True Right ascension
16h 30m 25s
True Declination
57° 39' 32"
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
04:33:15
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,410.751 km
Perigee altitude
1,409.44 km
Semi-major axis
7,788.232 km
Eccentricity
0.00008
Inclination
82.6091°
RAAN
79.4351°
Arg. of periapsis
80.2833°
True anomaly
41.23816°
Mean anomaly
41.2318°
Eccentric anomaly
41.23498°
Mean motion
3.1578 °/min
Orbital period
114 mins
BSTAR
0.00004468
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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 | 2025-10-25 09:58:39.128Z | 173.498° S | 2025-10-25 10:05:39.128Z | 111.652° ESE | 43.065° | 2025-10-25 10:13:39.128Z | 12.768° NNE |
| 11 mins | 2025-10-25 11:56:39.128Z | 249.078° W | 2025-10-25 12:01:39.128Z | 291.722° WNW | 22.044° | 2025-10-25 12:07:39.128Z | 341.12° N |
| 12 mins | 2025-10-25 20:01:39.128Z | 20.814° NNE | 2025-10-25 20:06:39.128Z | 65.209° ENE | 24.97° | 2025-10-25 20:13:39.128Z | 124.251° SE |
| 14 mins | 2025-10-25 21:55:39.128Z | 343.189° N | 2025-10-25 22:02:39.128Z | 263.019° W | 41.032° | 2025-10-25 22:09:39.128Z | 193.044° SSW |
| 11 mins | 2025-10-26 08:50:39.128Z | 127.577° SE | 2025-10-26 08:55:39.128Z | 82.379° E | 24.636° | 2025-10-26 09:01:39.128Z | 32.261° NE |
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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