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, 0.4 m
Radar Cross Section
0.588 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 COSMOS 2131
1 21106U 91009G 26171.37167454 -.00000012 00000-0 24011-4 0 9999
2 21106 74.0309 26.4671 0051850 162.8522 10.3269 12.58964434624667Epoch: 2026-06-20T08:55Z
TLE epoch observation values (Epoch: 2026-06-20T08:55:12.680Z)
Latitude
6.38815°
Longitude
162.25015°
Altitude
1,389.2 km
Speed
7.184 km/s
True Right ascension
13h 38m 33s
True Declination
6° 21' 12"
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
00:51:00
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,465.506 km
Perigee altitude
1,384.587 km
Semi-major axis
7,803.183 km
Eccentricity
0.00519
Inclination
74.0309°
RAAN
26.4671°
Arg. of periapsis
162.8522°
True anomaly
10.43409°
Mean anomaly
10.3269°
Eccentric anomaly
10.38043°
Mean motion
3.14873 °/min
Orbital period
114.33 mins
BSTAR
0.000024011
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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. |
|---|---|---|---|---|---|---|---|
| 17 mins | 2026-06-22 15:23:26.311Z | 199.623° SSW | 2026-06-22 15:31:26.311Z | 235.984° WSW | 44.622° | 2026-06-22 15:40:26.311Z | 18.125° NNE |
| 10 mins | 2026-06-22 17:25:26.311Z | 274.822° WNW | 2026-06-22 17:29:26.311Z | 305.976° NW | 18.377° | 2026-06-22 17:35:26.311Z | 352.353° N |
| 10 mins | 2026-06-22 23:32:26.311Z | 15.721° NNE | 2026-06-22 23:36:26.311Z | 49.732° ENE | 19.761° | 2026-06-22 23:42:26.311Z | 97.017° ESE |
| 15 mins | 2026-06-23 01:27:26.311Z | 340.192° N | 2026-06-23 01:34:26.311Z | 244.884° WSW | 44.963° | 2026-06-23 01:42:26.311Z | 164.963° S |
| 6 mins | 2026-06-23 03:27:26.311Z | 290.018° WNW | 2026-06-23 03:29:26.311Z | 274.245° WNW | 14.775° | 2026-06-23 03:33:26.311Z | 243.499° WSW |
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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