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, 0.9 m
Radar Cross Section
1.257 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 COSMOS 2167
1 21781U 91077C 26306.35974053 .00000033 00000-0 12127-3 0 9998
2 21781 82.6041 152.5737 0007466 122.2401 51.3845 12.64295741613408Epoch: 2026-11-02T08:38Z
TLE epoch observation values (Epoch: 2026-11-02T08:38:01.581Z)
Latitude
6.18287°
Longitude
160.62749°
Altitude
1,403.785 km
Speed
7.16 km/s
True Right ascension
22h 07m 05s
True Declination
6° 08' 57"
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
12:28:49
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,408.39 km
Perigee altitude
1,396.772 km
Semi-major axis
7,780.718 km
Eccentricity
0.00075
Inclination
82.6041°
RAAN
152.5737°
Arg. of periapsis
122.2401°
True anomaly
51.45139°
Mean anomaly
51.3845°
Eccentric anomaly
51.41794°
Mean motion
3.16238 °/min
Orbital period
113.84 mins
BSTAR
0.00012127
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-11-02 23:33:25.174Z | 38.776° NE | 2026-11-02 23:36:25.174Z | 60.657° ENE | 12.052° | 2026-11-02 23:38:25.174Z | 75.307° E |
| 15 mins | 2026-11-03 01:25:25.174Z | 358.701° N | 2026-11-03 01:32:25.174Z | 68.295° E | 67.323° | 2026-11-03 01:40:25.174Z | 162.069° S |
| 10 mins | 2026-11-03 03:22:25.174Z | 316.733° NNW | 2026-11-03 03:26:25.174Z | 281.829° WNW | 23.61° | 2026-11-03 03:32:25.174Z | 232.478° WSW |
| 14 mins | 2026-11-03 14:12:25.174Z | 170.787° S | 2026-11-03 14:19:25.174Z | 75.164° E | 66.726° | 2026-11-03 14:26:25.174Z | 13.627° NNE |
| 11 mins | 2026-11-03 16:09:25.174Z | 248.047° W | 2026-11-03 16:14:25.174Z | 291.653° WNW | 24.786° | 2026-11-03 16:20:25.174Z | 341.629° N |
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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