COSMOS 2167, 21781
Orbit data source: Space-Track
COSMOS 2167, 21781 is a payload satellite owned by UNKS RF (CIS) in LEO that was launched on Tue, 12 Nov 1991 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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21781 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CISRelated business
Manufacturer
NPO PM
Mission
Defense Communications
Bus & Motor
STRELA-3, Unknown motor
Mass
225 kg wet, 225 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl, 0.8 m
Radar Cross Section
1.257 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 14 hours ago
TLE from 14 hours ago
0 COSMOS 2167
1 21781U 91077C 25310.65644845 .00000048 00000-0 20202-3 0 9997
2 21781 82.6097 22.7259 0006355 219.3682 293.7938 12.64284008567824Epoch: 2025-11-06T15:45Z
TLE epoch observation values (Epoch: 2025-11-06T15:45:17.146Z)
Latitude
26.69706°
Longitude
-83.42852°
Altitude
1,406.433 km
Speed
7.16 km/s
True Right ascension
13h 16m 01s
True Declination
26° 34' 15"
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
01:52:47
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,407.573 km
Perigee altitude
1,397.684 km
Semi-major axis
7,780.766 km
Eccentricity
0.00064
Inclination
82.6097°
RAAN
22.7259°
Arg. of periapsis
219.3682°
True anomaly
293.72715°
Mean anomaly
293.7938°
Eccentric anomaly
293.76047°
Mean motion
3.16235 °/min
Orbital period
113.84 mins
BSTAR
0.00020202
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Other satellites on launch #77 in the year 1991 (1991-11-12 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 2167 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 | 2025-11-07 06:13:30.928Z | 203.88° SW | 2025-11-07 06:21:30.928Z | 281.277° WNW | 40.249° | 2025-11-07 06:29:30.928Z | 359.839° N |
| 14 mins | 2025-11-07 16:15:30.928Z | 3.227° NNE | 2025-11-07 16:22:30.928Z | 88.865° E | 40.187° | 2025-11-07 16:29:30.928Z | 155.045° SSE |
| 11 mins | 2025-11-07 18:11:30.928Z | 321.943° NNW | 2025-11-07 18:16:30.928Z | 275.433° WNW | 25.219° | 2025-11-07 18:22:30.928Z | 225.124° WSW |
| 15 mins | 2025-11-08 05:01:30.928Z | 164.773° S | 2025-11-08 05:08:30.928Z | 91.928° ESE | 40.254° | 2025-11-08 05:16:30.928Z | 15.591° NNE |
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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