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
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 COSMOS 1691
1 16139U 85094B 26171.41308330 .00000033 00000-0 12276-3 0 9992
2 16139 82.6123 287.8615 0001380 119.9484 311.2245 12.62475956875644Epoch: 2026-06-20T09:54Z
TLE epoch observation values (Epoch: 2026-06-20T09:54:50.397Z)
Latitude
69.88387°
Longitude
-108.85128°
Altitude
1,424.098 km
Speed
7.155 km/s
True Right ascension
20h 33m 56s
True Declination
69° 46' 55"
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
23:21:53
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,411.135 km
Perigee altitude
1,408.986 km
Semi-major axis
7,788.198 km
Eccentricity
0.00014
Inclination
82.6123°
RAAN
287.8615°
Arg. of periapsis
119.9484°
True anomaly
311.2126°
Mean anomaly
311.2245°
Eccentric anomaly
311.21855°
Mean motion
3.15782 °/min
Orbital period
114 mins
BSTAR
0.00012276
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-06-22 17:20:34.265Z | 38.729° NE | 2026-06-22 17:23:34.265Z | 61.161° ENE | 12.957° | 2026-06-22 17:26:34.265Z | 83.284° E |
| 14 mins | 2026-06-22 19:13:34.265Z | 358.659° N | 2026-06-22 19:19:34.265Z | 59.653° ENE | 43.471° | 2026-06-22 19:27:34.265Z | 164.82° S |
| 10 mins | 2026-06-22 21:09:34.265Z | 317.316° NNW | 2026-06-22 21:13:34.265Z | 284.33° WNW | 20.363° | 2026-06-22 21:19:34.265Z | 235.842° WSW |
| 4 mins | 2026-06-23 06:12:34.265Z | 84.946° E | 2026-06-23 06:13:34.265Z | 77.583° E | 11.7° | 2026-06-23 06:16:34.265Z | 55.84° ENE |
| 15 mins | 2026-06-23 08:00:34.265Z | 174.973° S | 2026-06-23 08:07:34.265Z | 81.69° E | 43.766° | 2026-06-23 08:15:34.265Z | 11.412° NNE |
| 10 mins | 2026-06-23 09:58:34.265Z | 254.01° W | 2026-06-23 10:03:34.265Z | 297.653° NW | 21.016° | 2026-06-23 10:08:34.265Z | 338.156° 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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