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: 11 hours ago
TLE from 11 hours ago
0 COSMOS 1691
1 16139U 85094B 26037.00473292 .00000014 00000-0 17763-4 0 9994
2 16139 82.6136 13.2653 0001534 89.5821 333.0272 12.62472193858686Epoch: 2026-02-06T00:06Z
TLE epoch observation values (Epoch: 2026-02-06T00:06:48.924Z)
Latitude
61.78368°
Longitude
-110.67649°
Altitude
1,422.231 km
Speed
7.156 km/s
True Right ascension
01h 48m 42s
True Declination
61° 39' 09"
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
13:30:11
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,411.271 km
Perigee altitude
1,408.881 km
Semi-major axis
7,788.213 km
Eccentricity
0.00015
Inclination
82.6136°
RAAN
13.2653°
Arg. of periapsis
89.5821°
True anomaly
333.01923°
Mean anomaly
333.0272°
Eccentric anomaly
333.02321°
Mean motion
3.15781 °/min
Orbital period
114 mins
BSTAR
0.000017763
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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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2026-02-06 11:50:12.806Z | 324.03° NNW | 2026-02-06 11:56:12.806Z | 275.112° WNW | 21.157° | 2026-02-06 12:01:12.806Z | 235.269° WSW |
| 15 mins | 2026-02-06 22:42:12.806Z | 173.395° S | 2026-02-06 22:49:12.806Z | 86.826° E | 43.386° | 2026-02-06 22:57:12.806Z | 12.073° NNE |
| 10 mins | 2026-02-07 00:40:12.806Z | 252.664° W | 2026-02-07 00:45:12.806Z | 297.055° NW | 21.735° | 2026-02-07 00:50:12.806Z | 338.262° N |
| 12 mins | 2026-02-07 08:44:12.806Z | 17.967° NNE | 2026-02-07 08:50:12.806Z | 71.273° E | 25.255° | 2026-02-07 08:56:12.806Z | 122.336° SE |
| 14 mins | 2026-02-07 10:39:12.806Z | 341.774° N | 2026-02-07 10:45:12.806Z | 277.569° WNW | 40.767° | 2026-02-07 10:53:12.806Z | 192.581° SSW |
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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