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 25341.96055593 .00000052 00000-0 23195-3 0 9993
2 16139 82.6133 51.4295 0000862 120.5517 63.7022 12.62469779851106Epoch: 2025-12-07T23:03Z
TLE epoch observation values (Epoch: 2025-12-07T23:03:12.032Z)
Latitude
-4.35972°
Longitude
169.22643°
Altitude
1,415.872 km
Speed
7.153 km/s
True Right ascension
15h 27m 58s
True Declination
-4° 20' 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
08:18:03
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,410.757 km
Perigee altitude
1,409.415 km
Semi-major axis
7,788.223 km
Eccentricity
0.00009
Inclination
82.6133°
RAAN
51.4295°
Arg. of periapsis
120.5517°
True anomaly
63.71106°
Mean anomaly
63.7022°
Eccentric anomaly
63.70663°
Mean motion
3.15781 °/min
Orbital period
114 mins
BSTAR
0.00023195
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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 | 2025-12-08 15:47:50.448Z | 4.825° NNE | 2025-12-08 15:55:50.448Z | 80.403° E | 34.684° | 2025-12-08 16:02:50.448Z | 143.594° SSE |
| 12 mins | 2025-12-08 17:44:50.448Z | 329.566° NNW | 2025-12-08 17:49:50.448Z | 281.341° WNW | 31.411° | 2025-12-08 17:56:50.448Z | 213.415° SW |
| 14 mins | 2025-12-09 04:36:50.448Z | 152.374° SSE | 2025-12-09 04:43:50.448Z | 79.37° E | 34.652° | 2025-12-09 04:50:50.448Z | 20.734° NNE |
| 14 mins | 2025-12-09 06:31:50.448Z | 224.839° SW | 2025-12-09 06:38:50.448Z | 293.823° NW | 31.495° | 2025-12-09 06:45:50.448Z | 352.569° N |
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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