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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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: 20 hours ago
TLE from 20 hours ago
0 COSMOS 2167
1 21781U 91077C 26235.18162169 .00000030 00000-0 10690-3 0 9997
2 21781 82.6060 197.9650 0005750 296.3251 74.9306 12.64293725604410Epoch: 2026-08-23T04:21Z
TLE epoch observation values (Epoch: 2026-08-23T04:21:32.114Z)
Latitude
11.1794°
Longitude
162.56218°
Altitude
1,406.094 km
Speed
7.159 km/s
True Right ascension
13h 17m 42s
True Declination
11° 07' 11"
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
15:00:18
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,407.063 km
Perigee altitude
1,398.115 km
Semi-major axis
7,780.726 km
Eccentricity
0.00058
Inclination
82.606°
RAAN
197.965°
Arg. of periapsis
296.3251°
True anomaly
74.99424°
Mean anomaly
74.9306°
Eccentric anomaly
74.96242°
Mean motion
3.16237 °/min
Orbital period
113.84 mins
BSTAR
0.0001069
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-08-24 07:30:38.653Z | 26.162° NE | 2026-08-24 07:35:38.653Z | 64.526° ENE | 16.425° | 2026-08-24 07:39:38.653Z | 95.703° ESE |
| 15 mins | 2026-08-24 09:24:38.653Z | 353.238° N | 2026-08-24 09:31:38.653Z | 131.591° SE | 44.951° | 2026-08-24 09:39:38.653Z | 173.709° S |
| 8 mins | 2026-08-24 11:21:38.653Z | 309.731° NW | 2026-08-24 11:24:38.653Z | 286.176° WNW | 16.257° | 2026-08-24 11:29:38.653Z | 247.68° W |
| 6 mins | 2026-08-24 20:21:38.653Z | 97.255° ESE | 2026-08-24 20:24:38.653Z | 73.219° E | 15.075° | 2026-08-24 20:27:38.653Z | 50.333° ENE |
| 15 mins | 2026-08-24 22:10:38.653Z | 183.816° SSW | 2026-08-24 22:17:38.653Z | 118.658° SE | 44.972° | 2026-08-24 22:25:38.653Z | 8.233° 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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