COSMOS 2131, 21106
Orbit data source: Space-Track
COSMOS 2131, 21106 is a payload satellite owned by UNKS RF (CIS) in LEO that was launched on Tue, 12 Feb 1991 UTC via a KOSMOS 11K65M 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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21106 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
NPO PM
Mission
Defense Communications
Bus & Motor
STRELA-1 11F625, Unknown motor
Mass
60 kg wet, 60 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Sphere, Unknown HBR
Radar Cross Section
0.588 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 14 hours ago
TLE from 14 hours ago
0 COSMOS 2131
1 21106U 91009G 26070.67680740 -.00000003 00000-0 78572-4 0 9999
2 21106 74.0313 162.5342 0052417 315.7782 115.0534 12.58962581611997Epoch: 2026-03-11T16:14Z
TLE epoch observation values (Epoch: 2026-03-11T16:14:36.159Z)
Latitude
65.7414°
Longitude
148.73372°
Altitude
1,455.727 km
Speed
7.132 km/s
True Right ascension
13h 26m 53s
True Declination
65° 37' 26"
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
10:34:37
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,465.956 km
Perigee altitude
1,384.152 km
Semi-major axis
7,803.191 km
Eccentricity
0.00524
Inclination
74.0313°
RAAN
162.5342°
Arg. of periapsis
315.7782°
True anomaly
115.59603°
Mean anomaly
115.0534°
Eccentric anomaly
115.32486°
Mean motion
3.14873 °/min
Orbital period
114.33 mins
BSTAR
0.000078572
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Other satellites on launch #9 in the year 1991 (1991-02-12 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 2131 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. |
|---|---|---|---|---|---|---|---|
| 16 mins | 2026-03-12 07:12:26.561Z | 195.404° SSW | 2026-03-12 07:20:26.561Z | 136.667° SSE | 44.974° | 2026-03-12 07:28:26.561Z | 19.644° NNE |
| 11 mins | 2026-03-12 09:13:26.561Z | 268.785° W | 2026-03-12 09:18:26.561Z | 309.465° NW | 20.125° | 2026-03-12 09:24:26.561Z | 355.425° N |
| 10 mins | 2026-03-12 15:20:26.561Z | 11.745° NNE | 2026-03-12 15:25:26.561Z | 51.051° ENE | 19.045° | 2026-03-12 15:30:26.561Z | 89.318° E |
| 15 mins | 2026-03-12 17:16:26.561Z | 342.544° N | 2026-03-12 17:23:26.561Z | 88.609° E | 44.898° | 2026-03-12 17:31:26.561Z | 160.808° S |
| 9 mins | 2026-03-12 19:14:26.561Z | 304.105° NW | 2026-03-12 19:18:26.561Z | 274.085° WNW | 17.848° | 2026-03-12 19:23:26.561Z | 235.567° WSW |
| 9 mins | 2026-03-13 06:06:26.561Z | 158.528° S | 2026-03-13 06:12:26.561Z | 102.834° ESE | 32.636° | 2026-03-13 06:15:26.561Z | 61.314° ENE |
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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